Merge pull request #119 from otagi/master

Fix to avoid a cyclic reference in UIBarButtonItem.
just a variable name change
added check for 'weak!' method, and bumped version to 1.4.5
Added blink command to sugarcube-repl
rm debug output
Merge https://github.com/ijpiantanida/sugarcube into blink
moved 'blinking_view' to the window, so it's always on top, and added '.uicolor' support to the 'color' param