Saving project settings on quitting app.
remove "Joints" from sequencer in SK projects
fixed actual (and possible) crashes accessing index 0 of potentially empty arrays
Bugfix for issue #162. Selection on stage wrong after dragging multiple nodes.
fix relative position type, and changes in position type for SK
fix contentSize editable
updated SK default project with label position centered on % of parent container
added zPosition property to nodes
update SK default project with zPosition usage
fix % relative position not calculated for some node types
fixed saving changes position slightly (of children with % positioned parent)
updated SK default project
update SB+SK submodule ref
tryfix undo changing position (display only)
test proj
Added the ability for xcode to auto publish spritebuilder project everytime the spritebuilder app is built.
Merge pull request #329 from osinoleg/develop

Added the ability for xcode to auto publish spritebuilder project everyt...
Merge pull request #327 from NickyWeber/bugfix/issue_#162_multiselection_wrong_after_dragging

Bugfix for issue #162. Selection on stage wrong after dragging multiple nodes.
Merge pull request #322 from NickyWeber/bugfix/issue_319_project_settings_not_saved

Issue #319: Saving project settings on quitting app.
SK default project: bg color scales with content size