Added pkpass to the list
Move Jekyll::DEFAULTS to Jekyll::Configuration::DEFAULTS
Add Jekyll::Configuration
Jekyll.configuration should use the new Jekyll::Configuration class
TomDoc Jekyll::Configuration
Unit test for Configuration#stringify_keys
Add unit tests for Configuration#config_files
In Configuration#config_files, cascade to the Configuration's value of 'source' before the default
Refactor setup block for test of Configuration#config_files
Added a unit test for Configuration#backwards_compatibilize
Moving the backwards-compatibilizing to Configuration#read_config_files. @mattr-
Refactored Configuration#config_files
Move initialization of parsers to separate classes
Moved out conversion logic
rescue block for the method and added redcarpet as option for parser
Add 'excerpt' page variable to Docs Variables page.
Moved 'excerpt' var below 'title'.
Merge pull request #953 from mojombo/refactor-configuration

Refactor Jekyll Configuration
Merge pull request #956 from jhauraw/doc-var-excerpt

Add 'excerpt' page variable to Docs Variables page.
Add implicit defaults to DEFAULTS