Dust things off & get tests working again
pass date along

Conflicts:
	lib/HiD/Post.pm
	lib/HiD/Role/IsConverted.pm
added valid extension checking for template processing

Conflicts:
	lib/HiD/Page.pm
	lib/HiD/Role/IsPublished.pm
Do not copy .git or .svn files
Add support for post excerpts aka blurbs

Initial implementation by reyjrar in
ea1aba8d3dd862736ca4c59cd35eacece35e7f3b.

Extended by genehack:
* rename from 'blurb' to 'excerpt' (to match jekyll)
* add 'excerpt_separator' config option (ditto)
* update and refactor a few other things
* add a minimal excerpt processing test
Merge branch 'integrate-reyjrar-stuff'