Unescape URLs when checking internal links
Merge pull request #315 from dufour/unescapeURLs

Unescape URLs when checking internal links
Add slim to list of text extensions (fixes nanoc/nanoc#316)
Remove temp text files after compilation
Merge branch 'release-3.6.x' of github.com:nanoc/nanoc into release-3.6.x
Update release notes for 3.6.4
Merge branch 'release-3.6.x' into release-3.x

Conflicts:
	test/extra/checking/checks/test_internal_links.rb
Merge branch 'release-3.x'

Conflicts:
	NEWS.md
	lib/nanoc/base/entities/site.rb