small fix for directional key navigation in the treeview. Checkbox used to get focused and that would be the end of it.
 "Downside" you'll have to click the approved box
Big new Feature/fix for previous feature
Now with Enter you can jump from one frame to the next in an image and it will open and select the same polygroup you were on (if possible) and set you on the first polygon if one exists
else it will just select the group.

When you're drawing boxes in the image view itself as well, if you are done and want to go to the next frame, just hit enter and you will jump to the next frame and if possible, be on the first polygon in that group
(there's no guarantee that there is the same amount of polygons in a group from frame to frame so I can't set you on the same frame and that seems a bit redundant anyways)
Probably the BEST feature I've added yet to increase the speed that you can do things with Boxer.

When you get to a polygon and you are drawing stuff, when you are done with that current Polygon CLICK your Middle Mouse button
This will create and select a new polygon so you can keep drawing without going back to the other view to have to right click make new polygon and then back over to do it

This + enter to skip to next frame should make for a lot of production value :D
Quick Guide and some Hotkeys (will probably still grab the hotkeys for the "File" menu as well)
How to use the new "create Poly" and "Switch to next frame and polygroup" features
Merge pull request #10 from TravisEvashkevich/master

Fixes and Feature #3