NEWS.md

tsibble 1.1.5

• Fix difference() giving extra NA values when the time series is shorter than the lag length. (#310, @mitchelloharawild)

tsibble 1.1.4

• Fixed vec_ptype2() for yearweek and yearquarter for non-default week start. (#299)
• Fixed count_gaps() warning message due to dplyr deprecation in favour of reframe(). (#295)

tsibble 1.1.3

• Fixed the argument of .full in *_gaps() when inputs like T, F are valid. (#275)
• Fixed validation of index2 in build_tsibble() when a column name contains "index". (#284)
• No longer export time() methods (renamed to time_ts()) to avoid contaminating time() in stats::window(). (#277)

tsibble 1.1.2

• Re-document to fix HTML issues in .Rd

tsibble 1.1.1

• New functions make_year*() to easily supply time components.
• Supported stats::start() and stats::end() for the .full argument in *_gaps(), when *_gaps() are used in other packages. (#269)

tsibble 1.1.0

• Abort rbind() and cbind() for tsibble, and suggest to use bind_rows() and bind_cols() instead. (#256)
• Fixed bug in filter_in() for yearweek class with different week starts of than the default. (#261)
• Improved as.ts.tbl_ts() to better handle a tsibble of multiple key variables but single value. (#258)
• Added new arguments .start and .end to *_gaps() for custom starting and ending time. (#259)
• Fixed bug in holiday_aus() for Boxing Day. If falling on Sat/Sun, the holiday should be forwarded to 2 days. (#251)
• Added count() and tally() S3 methods for tsibble to behave like tibble input, and hence add_count() and add_tally(). (#232)
• Added a warning to yearmonth.character() when inputs are all numbers without delimiter. (#264)
• NA is accepted in year*(), instead of errors before.

tsibble 1.0.1

• Fixed format bug in yearmonth(). (#250, @mitchelloharawild)

tsibble 1.0.0

• Fixed bug in different yearmonth() underlying data for character inputs. (#226)
• Fixed C stack error when index contains NA with as_tsibble(). (#229)
• Fixed bug when by is missing in year*(). (#228)
• Removed rolling functions.
• Removed dependency of {purrr}.
• Added set operations (intersect(), union(), and setdiff()) for year* class. (#235, @wkdavis)
• Fixed bug in full_join() that produces an output with wrong temporal order. (#247)
• yearmonth() supported more character formats. (#142)

tsibble 0.9.3

• Defunct rolling functions in favour of {slider}.
• Dropped the support of summarise_all(), and made dplyr::across() compatible with summarise.tbl_ts().
• Fixed bug in custom ggplot scaling functions for out-of-limit breaks. (#195, #219, @TylerGrantSmith)
• Fixed crashing bug in grouped_ts[0L, ]. (#194, @TylerGrantSmith)

tsibble 0.9.2

• Fixed bug in new_data() for the yearweek class. (#199)
• Added index support for lubridate::Period, since Period can be ordered now. (#42)
• Added {lubridate}'s S4 methods as.period() and as.duration() for interval class. (#206)
• yearweek() gained a new argument week_start to specify the day on which week starts based on ISO 8601 standard. (#205)
• yearquarter() gained a new argument fiscal_start to specify the starting month of a fiscal year. (#174)

tsibble 0.9.1

• Fixed bugs when index_by() + summarise() with grouped factors. (#197)
• Fixed select() when removing redundant key. (#196)
• Added a new message in new_data.grouped_ts() to inform "grouping structure is ignored". (#193)
• vec_slice() updates tsibble data attributes.

tsibble 0.9.0

This release uses the vctrs package internally in {tsibble}.

Breaking changes

• The "interval" class has been formally defined as a record type under the vctrs framework. The new_interval() uses a new interface to create the interval and supports custom interval. Old tsibble objects will receive an error for "a corrupt tsibble".

New features

• The .full argument in *_gaps supports two more options, start() and end(), for padding NA to either starting or ending time. (#147)
• The argument n in new_data() and append_row() supports negative integer, appending past observations to the data. (#186)
• New set of scale_[x/y/colour/size/alpha/fill]_year*() for custom ggplot2 scales.
• Added pivot_longer() and pivot_wider() supporting methods for tsibble.
• bind_rows() and bind_cols() are now possible for tsibble with dplyr v1.0.0.

Improvements

• select() a tsibble now keeps both index and key by default. (#155)
• Added tidyr::drop_na() support for tsibble. (#173)

Bug fixes

• Fixed bug in as.ts.tbl_ts() for ignoring implicit missings. (#160)

Deprecated functions

• Deprecated window functions in favour of the {slider} package. (#143)
• Deprecated units_since() in favour of vec_cast().
• Remove is.tsibble().
• Defunct as.tsibble().

tsibble 0.8.6

This is a maintenance release due to tidyselect v1.0.0 changes.

tsibble 0.8.5

This is a maintenance release for CRAN fixes.

tsibble 0.8.4

This is a maintenance release due to the changes in the upstream package.

• Removed strong dependency of tidyr to Suggests.
• Soft deprecated is.tsibble().
• has_gaps() & count_gaps() gained a new argument .name for naming new columns.
• Improved the speed performance for new_data()/append_row().
• Improved the speed performance for as.ts.tbl_ts() for converting tsibble to ts.
• Added the support for POSIXlt as index.
• When the interval cannot be obtained due to the mismatched index class, an error is issued instead of a warning before.
• The interval is invariant to subsetting, such as filter(), slice(), and [.tbl_ts.
• Rolling window functions, like slide(), are slided into the "questioning" lifecycle, in favour of the slide package. (#143)

tsibble 0.8.3

• Added lifecycle badges to functions.
• index_by() supports lambda expression (#91).
• Defunct argument gather in as_tsibble.mts() in favour of pivot_longer.
• yearweek() handles characters containing keywords "W"/"Wk"/"Week", for example yearweek("2019 W03").

tsibble 0.8.2

This is a patch release.

• Fixed bugs for losing the "ordered" attribute when renaming a tsibble, introduced in v0.8.1 (#126).
• Fixed bug in as.ts.tbl_ts() for handling a tsibble of one row (#124).
• Fixed issue of nest.tbl_ts() for naming (#123).
• Fixed floating issues for duplicated indices in as_tsibble.ts() (#128).

tsibble 0.8.1

• Breaking change: index_by(.data, <empty>) by default groups the index variable rather than previously ungroup().
• Added new unnest_tsibble() to minimise the impact from the upcoming API changes in tidyr::unnest().
• index_by() allows for grouping index variable; and group_by() will throw out an error for grouping index.
• When creating a tsibble, a warning might be issued for mismatch between interval and index representation.
• Fixed bugs in semi_join.tbl_ts() and anti_join.tbl_ts() without suffix (#122).
• Deprecate as.tsibble() in favour of as_tsibble().
• Defunct fill_na() in favour of fill_gaps().
• Defunct pull_interval() in favour of interval_pull().

tsibble 0.8.0

Breaking changes

• This release has undergone an overhaul to clean tsibble's meta data: (1) attribute regular integrated to interval, (2) attribute ordered integrated to index. A previously stored tsibble object may receive a warning "corrupt tsibble object".
• The dplyr and tidyr generics are no longer re-exported. Instead they will be registered on load, which means you need to explicitly load library(tidyverse) in front.

Defunct & deprecated functions/arguments

• Deprecate id() for creating key for the consistence of tidy selectors, and will be defunct as of v0.9.0.
• Deprecate of pull_interval() in favour of interval_pull().
• Deprecate as.tsibble() in favour of as_tsibble(). The warning is displayed once per session.
• Deprecate gather = TRUE in as_tsibble.ts() in favour of pivot_longer = TRUE.
• Continue with deprecation of fill_na() in favour of fill_gaps(), and will be defunct in the next release.

Improvements

• Support the interval of "quarter", "month", "week" & "day" for difftime.
• Support the interval of "millisecond" & "microsecond" for hms.
• Added new argument .drop for dropping empty factor or not in as_tsibble() and build_tsibble().
• Binary - operator between yearweek, yearmonth, and yearquarter returns class difftime.
• Added new argument key_data to build_tsibble() for the easy-to-reason purpose.
• yearquarter() better supports strings that contains "Q"/"Qtr"/"Quarter". (#107)

Bug fixes

• Fixed bugs in as_tsibble.ts() for monthly series starting at other months than January. (#89)
• guess_frequency.yearweek() returns 52.18 for more accurate weekly representation, instead of 52.
• n() now can be called in slice.tbl_ts(). (#95)
• Fixed false warnings for negative indices in slice.tbl_ts().
• Fixed false warnings for a few cases in arrange.tbl_ts().
• Fixed *_join() for not finding key or index when by is specified. (#102)
• Added "Tasmania" to data(tourism) and 2017 data.
• More robustly handles sub-second intervals.

tsibble 0.7.0

Breaking changes

• Following the changes in dplyr v0.8.0 grouped data frames, tsibble allows for empty key values and disregards the lazily stored key. All operations now recalculate the keying structure.
• Grouped tsibble (grouped_ts) is a subclassing of grouped_df.
• The argument .size is retired in stretch() in favour of .step.
• stretch() gained a new .fill = NA argument, which returns the same length as the input. To restore the previous behaviour, please use .fill = NULL. (#88)

New features

• slide_tsibble(), tile_tsibble(), stretch_tsibble() provide fast and shorthand subsetting tsibble by rolling rows.
• slide() gained a new .step argument for calculating at every specified step instead of every single step.
• update_tsibble() to update key and index a bit easier.

Bug fixes

• Fixed rbind() for dropping custom index class. (#78)
• Fixed count_gaps() for dropping custom index class.
• count_gaps() now only summarises keys with gaps instead of all the keys.
• Fixed guess_frequency.yearweek() returning Inf. (@jeffzi, #84)
• Fixed incorrect interval computation for fractional doubles.
• More appropriately handles sub-second intervals.
• If grouped tsibble, fill_gaps() returns a grouped tsibble too.

Defunct & deprecated functions

• Defunct find_duplicates().
• Deprecated fill_na() in favour of fill_gaps().
• Defunct argument .drop in column-wise dplyr verbs.
• Defunct key_by() (no idea why it's there).

tsibble 0.6.2

New features

• scan_gaps() joins the family of implicit missing values handlers.
• The rolling window family gains parallel processing capabilities, prefixed by future_. It requires the furrr package to be installed. (#66)

Bug fixes

• Regression bug (since tsibble v0.6.0) for subsetting tsibble using [.tbl_ts. (#76)
• Issue a warning when a system time zone is "Europe/London" for time_in() and filter_index().

Misc

• Defunct split_by() and case_na().
• Deprecated find_duplicates().
• Continue with soft-deprecation of fill_na().

tsibble 0.6.1

• Fixed check errors on Fedora.
• If .data is a complete tsibble, fill_gaps() gives a warning instead of an error when name-value pairs are supplied.
• filter_index() works for a grouped tsibble.

tsibble 0.6.0

This release simplifies the "key" structure. The nesting and crossing definition has been removed from the "key" specification. One or more variables forming the "key", are required to identify observational units over time, but no longer assume the relationship between these variables. The nesting and crossing structure will be dealt with visualisation and forecasting reconciliation in downstream packages.

Breaking changes

• count_gaps.tbl_ts() returns a tibble containing gaps for each key value rather than an overall gap, which is consistent with the rest of tsibble methods. And all output column names that are not supplied by users gain a prefixed ".".
• time_unit() accepts interval input instead of time vectors to avoid overheads, also marked as internal function.
• Separate partial sliding from slider() and pslider() as new functions partial_slider() and partial_pslider(). Argument .partial is removed from slider() and pslider() to feature a simpler interface.
• Removed argument group from build_tsibble(). In order to construct a grouped tsibble, x requires a grouped df.

New features

• Added S3 generic has_gaps() to quickly check if there are implicit time gaps for each key in a tsibble.
• Added S3 generic new_data() to produce the future of a tsibble.
• A shorthand filter_index() to filter time window for a tsibble.
• New S3 generic time_in() to check if time falls in the ranges in compact expression, with no need for time zone specification.
• An empty tsibble is now valid and will not raise an error, which makes it easier to programme with.
• New vignettes on handling implicit missingness and FAQ.
• new_tsibble() creates a subclass of a tsibble.
• Renamed fill_na() to fill_gaps(), for more expressive function name and consistency to has_gaps() and count_gaps(). Soft-deprecated fill_na(). (#71)
• Added is_duplicated(), are_duplicated() and duplicates().
• If POSIXct, time zone will be displayed in the header via print().
• Added index support for ordered factors.

Bug fixes

• Fixed unexpected error message for holiday_aus() that requires package "timeDate".
• Fixed summarise.tbl_ts(), select.tbl_ts() & fill_na.tbl_ts() scoping issue (#67).
• slice.tbl_ts() correctly handles logical NA.
• fill_na() will only replace implicit time gaps by values and functions, and leave originally explicit NA intact.
• tidyr::fill() gained support for class "grouped_ts", and it is re-exported again. (#73)

Misc

• Soft-deprecated fill_na(), in favour of fill_gaps().
• Soft-deprecated find_duplicates(), in favour of are_duplicated().
• Deprecated case_na(), and will be defunct in next release.
• Deprecated split_by(), which is under development as S3 generic in dplyr.
• Soft-deprecated as.tsibble(), following as.tibble() in tibble.
• Deprecated .drop argument in column-wise verbs, and suggested to use as_tibble().
• If select() doesn't select index, it will inform users and automatically select it.

tsibble 0.5.3

New features

• Added append_row() for easily appending new observations to a tsibble. (#59)
• Nesting structure can be specified using /, consistent with lm. (#64)

Bug fixes

• Fixed warning in fill_na() for multiple replacements when using with group_by(), introduced in v0.5.1.
• as_tsibble.grouped_df() respected its existing groups and removed argument group. (#60)
• Preserve the ordering of key specification in select.tbl_ts(). (#63)

Misc

• Soft-deprecated case_na() & split_by().

tsibble 0.5.2

Bug fixes

• unnest.lst_ts respects the ordering of "key" values. (#56)
• split_by() and nest.tbl_ts() respect the appearance ordering of input variables. (#57)
• group_indices.tbl_ts() and key_indices() return consistent formats as its generic.
• Argument key no longer accepted character.

Improvements

• Slightly faster nest.tbl_ts().
• index_by() gives more informative error when LHS is named as index.

Changes catering for the updates in tibble

• No longer reexported as.tibble().
• Reexported tibble().

tsibble 0.5.1

New features

• tile() gained a new argument .bind = FALSE.
• Vectorised arithmetic operators (+ & -) for yearweek, yearmonth, and yearquarter.
• new_interval() creates an "interval" object with the specified values.

Improvements

• Faster performance in fill_na() for replacing values when group_by().
• Speed improvement when subsetting yearweek, yearmonth and yearquarter using [.

Bug fixes

• Fixed key updating via group_by() + summarise(). (#47)
• Respected the ordering of input variables while creating the key.
• Fixed "attempt to select less than one element in integerOneIndex" error message in unnest.lst_ts().
• Fixed incorrect interval when doing join operations for custom index class. (#52)
• Avoided warnings when character input for key and value in gather.tbl_ts(). (#54)

Misc

• slide() & stretch() use the same coercion rules as dplyr::combine() now, if .bind = TRUE.
• Avoid strong dependency on pillar.
• Setting row names on a tsibble is deprecated, which is consistent with tibble.

tsibble 0.5.0

This release introduced the breaking changes to the "interval" class to make tsibble better support finer time resolution (e.g. millisecond, microsecond, and nanosecond). The "interval" format changes from upper case to short hand. To support new time index class, only index_valid() and pull_interval() need to be defined now.

New features

• Added "nanotime" support for nanoseconds.
• Added scoped variant group_by_key() to easily group the key variables.
• slide() gained a new argument .align = "right" to align at "right", "center", or "left". If window size is even for center alignment, either "center-right" or "center-left" is needed.
• Defined arithmetic operators (+ & -) for yearweek, yearmonth, and yearquarter.
• slide() and stretch() gained a new argument .bind = FALSE.
• A new vignette on window functions.

Improvements

• Speed improvement for internals when it's a known valid tsibble. (#43)
• Better support "millisecond" and "microsecond".

Internal changes

• Replaced NA or NULL with 0 in the "interval" class to make the representation simpler.
• The interval class has new slots of "millisecond", "microsecond", "nanosecond".
• time_unit() is a function instead of S3 generic, and made index extension a bit easier.

Bug fixes

• Fixed warning in format.yearweek().
• Fixed group_by.lst_ts() for dropping the grouping information.
• Fixed stretch2() only applying .f to one input.
• Fixed NSE in as_tsibble.grouped_df() for groups. (#44)
• Fixed bug in .fill = NULL for slide().

Misc

• Moved package "timeDate" from Imports to Suggests.
• Added "anytime" to Imports for better parsing characters.

tsibble 0.4.0

Breaking changes

• Restructured windowed functions to follow the purrr style exactly (#35):
  • slide(), tile(), stretch() return lists only instead of numerics before.
  • added slide2(), pslide() to map over multiple inputs simultaneously.
  • added other type-stable variants such as slide_dbl(), slide_int(), slide_chr(), slide_lgl().
  • A negative window size results in a backward moving direction.
  • slide() gained a new argument .partial to support partial sliding.
• Renamed x to .x in slider(), tiler(), stretcher().
• pslider(), ptiler(), pstretcher() support multiple inputs now, and split them in parallel.

New features

• New holiday_aus() for Australian national and state-based public holiday.
• Defined diff() for year-week, year-month, and year-quarter.
• yearweek(), yearmonth(), yearquarter() supported for character.
• Added slide2(), pslide(), tile2(), ptile(), stretch2(), pstretch() to slide over multiple inputs simultaneously (#33).
• New S3 generics units_since() for index classes.
• New is_53weeks() for determine if the year has 53 ISO weeks.
• New S3 generics key_sum() for extending tsibble.

Improvements

• as_tsibble.ts() removed the tsp attribute from the value column.
• Dropped the "lst_col" attribute from lst_ts (#25).
• More informative error message when a data frame is passed to tsibble().
• More informative error message for fill_na() and count_gaps when a tsibble of unknown interval.
• as_tsibble.tbl_ts() & as_tsibble.grouped_ts() now return self (#34).
• id() is used in the tsibble context (e.g. as_tsibble(), tsibble(), build_tsibble()) regardless of the conflicts with dplyr or plyr, to avoid frustrating message (#36).
• select.tbl_ts() now preserved index.

Bug fixes

• Fixed bug in as.ts.tbl_ts() for ignoring the value argument when the key is empty.
• Fixed bug in [.tbl_ts() when subsetting columns by characters (#30).
• Fixed bug in fill_na.tbl_ts() dropping custom index class (#32).
• Fixed bug in format.yearweek() due to the boundary issue (#27).
• If a column passed as index contains NA, abort.

Misc

• Suggested on nycflights13 >= 1.0.0.

tsibble 0.3.0

The tsibble package has a hexagon logo now! Thanks Mitch (@mitchelloharawild).

New functions

• New difference() computes lagged differences of a numeric vector. It returns a vector of the same length as the input with NA padded. It works with mutate().
• Added the support of gather()/spread(), nest()/unnest() to tbl_ts.

Defunct

• retired tsummarise().

Internal changes

• If index2 deviates from index (using index_by()), the index2 will be part of grouping variables.

tsibble 0.2.0

This release (hopefully) marks the stability of a tsibble data object (tbl_ts). A tbl_ts contains the following components:

• key: single or multiple columns uniquely identify observational units over time. A key consisting of nested and crossed variables reflects the structure underlying the data. The programme itself takes care of the updates in the "key" when manipulating the data. The "key" differs from the grouping variables with respect to variables manipulated by users.
• index: a variable represents time. This together the "key" uniquely identifies each observation in the data table.
• index2: why do we need the second index? It means re-indexing to a variable, not the second index. It is identical to the index most time, but start deviating when using index_by(). index_by() works similarly to group_by(), but groups the index only. The dplyr verbs, like filter(), mutate(), operates on each time group of the data defined by index_by(). You may wonder why introducing a new function rather than using group_by() that users are most familiar with. It's because time is indispensable to a tsibble, index_by() provides a trace to understanding how the index changes. For this purpose, group_by() is just too general. For example, index_by() + summarise() aggregates data to less granular time period, leading to the update in index, which is nicely and intuitively handled now.
• interval: an interval class to save a list of time intervals. It computes the greatest common factor from the time difference of the index column, which should give a sensible interval for the almost all the cases, compared to minimal time distance. It also depends on the time representation. For example, if the data is monthly, the index is suggested to use a yearmonth() format instead of Date, as Date only gives the number of days not the number of months.
• regular: since a tsibble factors in the implicit missing cases, whether the data is regular or not cannot be determined. This relies on the user's specification.
• ordered: time-wise and rolling window functions assume data of temporal ordering. A tsibble will be sorted by its time index. If a key is explicitly declared, the key will be sorted first and followed by arranging time in ascending order. If it's not in time order, it broadcasts a warning.

Breaking changes

• Deprecated tsummarise() and its scoped variants. It can be replaced by the combo index_by() + summarise() (#20). tsummarise() provides an unintuitive interface where the first argument keeps the same size of the index, but the remaining arguments reduces rows to a single one. Analogously, it does group_by() and then summarise(). The proposed index_by() solves the issue of index update.
• Renamed inform_duplicates() (defunct) to find_duplicates() to better reflect its functionality.
• key_vars() and group_vars() return a vector of characters instead of a list.
• distinct.tbl_ts() now returns a tibble instead of an error.
• No longer reexported dplyr::do() and tidyr::fill(), as they respect the input structure.
• Defunct index_sum(), and replaced by index_valid() to extend index type support.

New functions

• index_by() groups time index, as the counterpart of group_by() in temporal context.
• A new S3 generic count_gaps() and gaps() counts time gaps (implicit missing observations in time).
• yearweek() creates and coerces to a year-week object. (#17)

API changes

• fill_na.tbl_ts() gained a new argument of .full = FALSE. .full = FALSE (the default) inserts NA for each key within its time period, TRUE for the entire time span. This affects the results of fill_na.tbl_ts() as it only took TRUE into account previously. (#15)
• Renamed the drop argument to .drop in column-wise dplyr verbs.
• Dropped the duplicated argument in pull_interval().
• group_by.tbl_ts() behaves exactly the same as group_by.tbl_df now. Grouping variables are temporary for data manipulation. Nested or crossed variables are not the type that group_by() thinks.

Improvements

• Added overall time span to the glimpse.tbl_ts().
• Slightly improved the speed of fill_na().

Bug fixes

• Fixed transmute.tbl_ts() for a univariate time series due to unregistered tidyselect helpers. (#9).
• Fixed bug in select.tbl_ts() and rename.tbl_ts() for not preserving grouped variables (#12).
• Fixed bug in select.tbl_ts() and rename.tbl_ts() for renaming grouped variables.

Internal changes

• A tbl_ts gains a new attribute index2, which is a candidate of new index (symbol) used by index_by().
• The time interval is obtained through the greatest common factor of positive time differences. This covers broader cases than the minimal value.
• attr(grouped_ts, "vars") stores characters instead of names, same as attr(grouped_df, "vars").

tsibble 0.1.5

This release introduces major changes into the underlying tbl_ts object:

• Dropped the attribute "key_indices" from a tbl_ts class to reduce the object size, and computed on the fly when printing.
• Gained a new attribute "ordered" to identify if it is arranged by key and index in ascending order. If not, broadcast a warning. The warning likely occurs to arrange() and slice() functions.
• The "index" attribute in a tbl_ts object is a symbol now instead of a quosure.
• The "key" attribute in a tbl_ts object is an unnamed list of symbols.

New functions

• "key" helpers:
  • key_update() to change/update the keys for a given tsibble.
  • unkey() as an S3 method for a tsibble of key size < 2.
  • key_indices() as an S3 method to extract key indices.
• split_by() to split a tsibble into a list of data by unquoted variables.
• build_tsibble() allows users to gain more control over a tsibble construction.
• Added as_tsibble.msts() for multiple seasonality time series defined in the forecast package.

Bug fixes

• Fixed as_tsibble.ts() for daily time series (when frequency = 7).
• group_by.tbl_ts() does not accept named expressions.

Internal changes

• No longer throw an error when grouping the index.
• An interval of regularly spaced tsibble is (re)computed when creating the tsibble and performing the row-wise operations (like filter() and slice()). This avoids unnecessary re-computation for many function calls.

tsibble 0.1.3

New functions

• Added the scoped variants for tsummarise() including tsummarise_all(), tsummarise_if(), tsummarise_at().

API changes

• The windowed functions, including slide(), tile(), stretch(), are no longer defined as S3 methods. Several new variants have been introduced for the purpose of type stability, like slide_lst() (a list), slide_dfr() (a row-binding data frame), slide_dfc() (a column-binding data frame).
• The index variable must sit in the first name-value pair in tsummarise() instead of any position in the call.
• transmute.tbl_ts() keeps the newly created variables along with index and keys, instead of throwing an error before.
• Depends on purrr (>= 0.2.3)

Bug fixes

• Fixed the error message in glimpse.tbl_ts()
• Fixed format.key() for nesting crossed with another nesting.

tsibble 0.1.2

This release marks the complete support of dplyr key verbs.

Reexported functions

• tidyr::fill() fills NA backward or forward in tsibble.
• Implement tbl_ts support for dplyr::*_join().
• No tbl_ts support for dplyr::transmute() and dplyr::distinct() and return an error.

New functions

• inform_duplicates() informs which row has duplicated elements of key and index variables.

Bug fixes

• Fix bug in summarise.tbl_ts() and tsummarise.tbl_ts(), when calling functions with no parameters like dplyr::n().
• In summarise.tbl_ts() and tsummarise.tbl_ts(), one grouping level should be dropped for the consistency with dplyr::summarise() for a grouped tbl_ts.
• Fix incorrect group and key indices.
• NULL and tbl_ts are supported in as_tsibble(). An empty tsibble is not allowed.
• group_by.tbl_ts(.data, ..., add = TRUE) works as expected now.

Internal changes

• Better handling grouped_ts and grouped_df.
• More informative error messages.

tsibble 0.1.0

• Initial release on CRAN.

tsibble 0.0.1

• Added a NEWS.md file to track changes to the package.
• Pre-release on Github