Merge pull request #476 from pcapriotti/topic/0.18.1

Use layoutPretty instead of layoutSmart when rendering help texts.

Merge pull request #474 from pcapriotti/topic/0.18.0

Move to Pretty Printer Proper

Bump Version

Merge pull request #445 from pcapriotti/topic/version-0.17.0.0

Prepare version 0.17

Update cabal file and changelog

Merge pull request #399 from pcapriotti/topic/0.16

Update changelog for release

Merge pull request #356 from pcapriotti/topic/0.15.1

Prepare for release

optparse-applicative 0.15.0

- Add support for GHC 8.8.1.

- Add `subparserInline` modifier as additional way of
  executing subparsers. When activated, the subparser
  parse tree will be inserted into that of the parent
  instead of being run independently, allowing mixing
  of child and parent options.

- Improve rendering of complex nested parse structures.
  Previously, brackets and parenthesis did not respect
  whether or not options had to be defined together.
  Now the parse tree is more accurately represeted in
  the help text.

- Add `helpLongEquals` modifier, which will change how
  long options are printed in the help text, adding an
  equals sign, for example "--input=FILE".

- Updated dependency bounds.

- Clean ups and Documentation.

Merge pull request #322 from pcapriotti/topic/prepare-release

Prepare for release

Merge pull request #290 from pcapriotti/topic/0.14.2

Prepare for release