Fix most compiler warnings.
minor changes to the Xcode project files.
Migrate to more recent Objective C syntax.
Fix some Static Analyzer warnings.
Set the file encoding of the Strings to UTF8.
Change the deployment target of the xibs to what Xcode is targeting.
Set the tools version to the xibs and data model to the most recent version of Xcode.
Set the git attribute of pbxproj files to be viewed as text with the line-feed EOL bit.
Have MainMenu.xib use auto-layout.
Migrate to an Xcode asset.
Use more AppKit-native images.
Update frameworks.
Minor, fiddly changes.
added early support for smart folders