Hot fix: nim ver in nimble file

Because of typo, last release required nim 1.16.0 which is not exists.

v0.3.6

welcome new newString without zero initialization.

v0.3.4

notable fixes:

• refactor: remove shallowCopy
• avoid nzCompressInit ambiguous call when included (#80)
• make getUnderlyingType work with type argument (#83)

v0.3.2

various fixes related to nim-devel branch. e.g. remove shallowCopy usage.

v0.3.1 add openArray API

fix previous release bug and add new openArray API in addition to seq[T] API

New API and new error handling

support seq[uint8] and string as input.
better error handling using Result[T, E]

More robust PNG loader

Fuzz tested with libFuzzer

v0.2.6

nimPNG now compiles with --gc:arc

v0.2.5

before internal reform