Prepare for v0.12.1 release
Merge pull request #149 from apiaryio/zdne/release-v0.12.1

Prepare for v0.12.1 release
portable homebrew install (mitigates hardcoded /usr/local/bin)
Merge pull request #168 from wilmoore/homebrew-formula

portable homebrew install (mitigates hardcoded /usr/local/bin)
Support for building on MS VS Express 2013
Set default to MSVC2012
Deprecate unsuppored MSVC versions
Fix compatibility with Python 3.x

In Python 3 `print` is no longer a statement
Merge pull request #178 from apiaryio/zdne/python3

Fix compatibility with Python 3.x
Merge pull request #175 from adamretter/master

Support for building on MS VS Express 2013
Updated configure (grammatical error + helper text)
Merge pull request #199 from SamuelMarks/master

Updated configure (grammatical error + helper text)
Remove direct Sundown dependency
Parser refactor orgin

The aim of this major refactor is to bring easy syntax extensibility
via parser modularity. See https://gist.github.com/zdne/55b7a38f52ca642e123b
the parser prototype.

This commit / refactor also introduces new redesigned Markdown parser – https://github.com/apiaryio/markdown-parser.
Reporting & section context parser data origin

Parsing foreign asset blocks.
Code block signature check origin. Additional asset tests.
Excessive indentation check origin
WIP: Header parser refactor in progress
Completed HeadersParser refactor
Finish HeadersParser refactored tests