DSL: add `tags` stanza

only limited/defined keys are permitted
 - :vendor
 - :font_pitch
 - :font_serif
 - :font_weight
 - :font_slant

forward-compatibility: no associated functionality is
provided.  Intentionally left undocumented.

References: #4688
rstudio 0.98.953
Fix Simple Comic sha.
Merge pull request #5298 from hswong3i/simple-comic-1.7_252

Fix Simple Comic sha.
Merge pull request #5295 from sjackman/rstudio

rstudio 0.98.953
Update ghc to r8
Merge pull request #5300 from kvanberendonck/master

Update ghc to r8
fixed filebot url
Add Breach version 0.3.20

A browser for the HTML5 era. Entirely written in Javascript. Free. Modular. Hackable. http://breach.cc/
Merge pull request #5305 from vitorgalvao/filebot

fixed filebot url
Update GHC to 7.8.3-r0
Merge pull request #5306 from ndr-qef/ghc

Update GHC to 7.8.3-r0
Merge pull request #5302 from vitorgalvao/fix-5296

Add Breach version 0.3.20
Add PDFShaver.app 1.0
Merge pull request #5307 from jeanregisser/pdfshaver

Add PDFShaver.app 1.0
Upgrade serf to 0.6.3
Add abgx360 app v1.0.6
Add phantomjs 1.9.7
Added Reaper 4.7 Cask

Reaper is a digital audio workstation software
Updated SourceTree to 1.9.5.2