Defines 'Post to SDF' methods as public static in order to resolve PHP strict warnings
Merge remote-tracking branch 'upstream/master'
Adds `lift_wp_search_init` action to Lift_WP_Search::init() to allow for the addition and removal of filters by a third party
Merge pull request #55 from stevenkword/master

Updates 'Post to SDF' static methods to resolve PHP strict warnings