Merge pull request #176 from yloiseau/master

Toc and direct links in golodoc
Missing StandardAugmentation and Async docs

This provides missing documentation elements from the Golo Programming Language Guide in the 'Misc.'
section.

Fixes #168
Fixes #170
Add a ctags doc processor and adapt the cli accordingly
change AbstractProcessor.process signature to have a map <source filename, compilation unit>, needed to have the source file in generated ctags
add several kinds of ctags
track imported modules/packages. Used for ctags and can be used to generate a dependencies graph :)
generate ctags for import statements
ctags address with regex for module, augment and import
add special behaviour to  to write to stdout if the path is
deal with stdout output for ctags
change in address regex: + does not work, use *
add tracking of lines and other nodes(imports, module states) in  to help generating ctags (and other doc artefacts, e.g. a link in the golodoc to html version of source)
add code in  to add unit tests for improvements in
add all remaining node to ctags generation. Change  into a  since the tags must be sorted
Merge branch 'wip-ctags' of github.com:yloiseau/golo-lang into wip-ctags