re-adding caretUndoStack.push() and caretRedoStack.clear() calls to fix
bug #707
Merge branch 'master' of https://github.com/joshgiesbrecht/processing
fixing bug #1781 (installing modes/tools on Win)
changes a rename/move to a copy and delete
pulls the delete step out one level so that we can unload the temp
'newContrib' first, since having it loaded was locking the files from
being renamed/removed on Windows (somewhat erratically).

A bit slower than before but should work a heck of a lot more
often for Windows users.
Merge pull request #1847 from joshgiesbrecht/master

fixing bugs #707 and #1781
fix line ending problem with args.txt for Windows when exporting from others (#1890)
updating the todo list and starting release notes
New reference and keywords for 2.0.1
added option to remove the background image at the top of the window per Casey's request
fix date in revisions, add todo items
starting the next release
Merge remote-tracking branch 'upstream/master'