Ignore entries if they are directories.
Fix tests that fail due to having a directory that looks like a post
Flatten tags and categories lists. Fixes #741.
Force usage of older directory_watcher gem as 1.5 is broken. #883
Update history to reflect merge of #883
Remove unused code
Merge pull request #885 from mattr-/remove-unused-code

Remove unused code
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
Add test for processing of symlinked static files and pages
Fix symlinked assets not being included, even in unsafe mode
Fix import command parameters

Apparently, the Commander gem treats options as boolean values
when one does not indicate that a certain options is followed
by a string. This led to the jekyll-import gem only receiving
booleans instead of dbname/user/pwd...
Move tests for symlinked files to separate test cases
Merge pull request #910 from x3ro/fix-import-command-parameters

Fix import command parameters
Update history to reflect merge of #910.
Add code climate badge to README
Preloads directory_watcher glob
Merge pull request #913 from dracula2000/master

Add code climate badge to README