Added deprecation notice for actdiag.

Refs #751.
Added deprecation notice for adsuck.

Refs #751.
Added deprecation notice for gruffy.

Refs #751.
Added deprecation notice for httpretty.

Refs #751.
Added deprecation notice for lettuce.

Refs #751.
Added deprecation notice for luaposix.

Refs #751.
Added deprecation notice for pgmagick.

Refs #751.
Added deprecation notice for pyScss.

Refs #751.
Added deprecation notice for seqdiag.

Refs #751.
Added deprecation notice for sure.

Refs #751.
Merge branch 'feat/deprecate_packages'

Closes #751.

* feat/deprecate_packages:
  Added deprecation notice for sure.
  Added deprecation notice for seqdiag.
  Added deprecation notice for pyScss.
  Added deprecation notice for pgmagick.
  Added deprecation notice for luaposix.
  Added deprecation notice for lettuce.
  Added deprecation notice for httpretty.
  Added deprecation notice for gruffy.
  Added deprecation notice for adsuck.
  Added deprecation notice for actdiag.