Updated PHP dependencies with Composer
Added ability to filter JSON information in Activity
Added custom Activity type post for Taxon updates.
Added Twig templating library
Added Twig template for Taxon changes.
Updated PBDB-PHP with new __isset fix for Twig
Fixed issues with Twig template of Taxon change
Added Dimension custom Activity change
Added Taxon header to Activity change
Added Geochronology custom Activity change
Added Lithostratigraphy custom Activity change
Fixed a bug with unicode characters in Fossil change Activities
Added Location custom Activity change
Fixed a bug where the Fossil ID was incorrect for Activities
Merge pull request #63 from myfossil/activity-enhance

Activity enhancements, namely changesets