- #171 you can change the column count of media using volume buttons
- added also a explorer mode on the BottomSheet when you try to copy/move
- #233 added mapbox.com provider (light & dark maps available)
- #203 displayed video name in GridView.
- fixed #201, no more issue with operations on files
- #145 fixed some KitKat elevation issue (Toolbar on PagerView, icons like selected, gif on GridView)
- #212 no more dialog would disseapear (rotation screen problems fixed).
- #229 sort preferenced remembered also when viewer launched from another app.
- sort function available also on the single photo viewer (to fix)
also fixed #211, #216, #221, #239, #53
