Prepare release
Fixed crash when dragging (over) header and footer views
Fixed onItemMoved callback with headerviews
Released 2.6.0
Merge branch 'dev'
Updated readme
Updated readme
Merge branch 'dev'
Use a more robust way of checking if GridView is measuring an item. Fixes #137.
Updated README
Merge branch 'master' into dev
Prepare 2.6.1-SNAPSHOT release