v0.4.0

Adds additional API coverage.

This release is in preparation for the next release which will be more go-idiomatic in terms of naming, but will break existing APIs with slight method name changes.

API Additions

• cocoa.NSWorkspace added (@tmc)
• cocoa.NSRunningApplication added (@tmc)
• cocoa.NSUserDefaults added (@tmc)
• cocoa.NSTextField added (@tmc)

Docs & Examples

• Crash Course in Macdriver added (@programmingkidx)
• added userdefaults example (@tmc)
• added workspaceutils example (@tmc)

Full Changelog: v0.3.0...v0.4.0