add page variable to liquid custom tags and blocks. thx to mike west for the patch
Ignore entries if they are directories.
Fix tests that fail due to having a directory that looks like a post
Added abbreviated month + test.
Added filter date_to_rfc822

According to the W3C RSS Feed Validator, feeds must format dates as described
on RFC-822 to be valid. Refer to their site to get more info:
http://feedvalidator.org/docs/error/InvalidRFC2822Date.html

I also added a couple of missing unit tests to the other date filters
Changed to short_month and re-ran tests.
Fixed expected output from xmlschema and rfc822
Added pkpass to the list
Add test for processing of symlinked static files and pages
Fix symlinked assets not being included, even in unsafe mode
Move tests for symlinked files to separate test cases
Update history to reflect merge of #909.
Remove pygments as a dependency

Pygments is bundled in pygments.rb it's no longer required
to be installed by the user.
Updated version to 1.0.0.beta3.
Update history to reflect merge of #890
Upgrade pygments.rb to 0.4.2. Fixes #927
add ordinal date permalink style (/YYYY/DDD/slug.html)
Update history to reflect merge of #892.
Update history to reflect merge of #875
Update history to reflect merge of #918