Add release notes for resource types
Clarify that pre_run_check is a no-op on earlier puppet versions
More release note updates!
Added notes for Miscellaneous Improvements
Another batch of release notes
New page: Add resource type deprecations
Add 3.6 to prior versions on the index page
New page: deprecated CLI features
Merge pull request #379 from laurenrother/puppet37

Add PMT-related updates summary.
Release notes: fix links, remove a todo
Updates modules_publishing/installing w/ PMT updates for 3.7

Updates to include new flags, symlink note, information on excluding files from a module build, and versioning error during install. Also reverts build instructions due to bugfix.