Turn off joinspaces
Set up basic structure for Swift bundle
Add basic Syntastic support to Swift
Port :SwiftRun to the Rust-style architecture

This compiles and runs the file instead of using immediate mode.
Fix the Syntastic swift IsAvailable() check

It was executing `xcrun swift`, which takes a while to load up LLDB.
Instead it should be using `xcrun -find swift`.
Start defining Swift syntax