Main feature of this release is supporting specifying files to be uploaded by xlsx file and additionally specifying column mappings for those files.

Rest of release's features/resolved issues could be found in Release 0.2 milestone.

Known bugs:

• if path to column mappings omitted uploader will fallback to specifying folder of files despite of specified xlsx file.
  Possible workaround to specify empty xlsx file as mapping file.

Implemented xlsx file to PostgreSQL uploader