Try to be severe in working around ARC issues

Refs #77
Refs #80
Refs #33

Tag 0.9.16.5
Fix value when manifold was used
NSFileManager+PMKPromise
Promise.when for Array<Promise<Void>>
Merge pull request #82 from hariseldon78/master

Promise.when for Array<Promise<Void>>
Merge branch 'master' of github.com:mxcl/PromiseKit