v1.4.2

#620 Penn State Theme - Buttons have insufficient color contrast
#722 Display an EPUB3
#726 Establish data model for FET (Fully Encoded Text) - Jeremy will rework this ticket
#848 Review documentation and provide feedback
#877 Button styling (share link, list view)
#880 Penn State review
#900 QC Minnesota (2) metadata template/assets
#913 Platform Admin - Add a Publisher
#937 Update to Rails 5
#940 Replace Minnesota Assets (that had restrictions)
#945 Deploy Penn State to production
#946 Deploy Minnesota (2nd batch) to production
#949 Platform Admin Dashboard: fix page titles
#952 Cozy Sun Bear widget style fixes
#954 Monograph description teaster issues [BUG]
#955 Tombstone
#958 Add Penn State to Fulcrum’s home page
#24 Calculate height of table of contents menu to equal the height of Cozy-module-book
#45 Extend preferences widget
#769 solr_wrapper shall not persist [CLEANUP]