Ignore this commit --
Revert 548e5d0..8c9142c

This rolls back to commit 548e5d097eccd145046077eee7357184cc4fc371.
Merge branch 'master' of https://github.com/estebanroblesluna/abstractions
Hide Toolbox when no elements
Merge branch 'master' of https://github.com/estebanroblesluna/abstractions
Hide Toolbox when no elements - version 2
change setNeedsDisplay to invalidate when unhiding
Merge branch 'master' of https://github.com/estebanroblesluna/abstractions