Updated version switch and copyright year.
Added date of release.
BUG: Whats new plotting directive syntax
Merge pull request #447 from cpelley/bug_whatsnew

BUG: Whats new plotting directive syntax
Merge remote branch 'upstream/v0.11.x'

* upstream/v0.11.x:
  BUG: Whats new plotting directive syntax
  Added date of release.
  Updated version switch and copyright year.
Upped the development version to v0.12.x.