v3.1.0

Added:

• support of SQL database schema migration using files as described here https://github.com/golang-migrate/migrate/blob/master/MIGRATIONS.md
  • postgreSQL migration files can be added to main/adapters/database/postgres/migrations
  • SQLite migration files can be added to main/adapters/database/sqlite/migrations

Removed:

• deprecated support of migration from legacy file based context into database
  • to migrate the legacy file based context into the database, the user will have to use v3.0.0 and run it with the --migrate flag once
• removed support of --migrate flag
  • schema version will be checked upon startup automatically and migrated if necessary

Changed:

• to set the configuration directory, the path to the configuration file now has to be passed as command line flag in the form -configdirectory path/to/configdir