Slight inline documentation updates.

- Fix #314: documentation for `finally` should use the word "settling" instead of "rejection."
- Use "thenable" more often, to reflect real behavior.
- Use "settled" in place of "resolved" where appropriate.
- Rewrite `defer` inline documentation to match reality.
Infinite long stack traces!! Closes #144.
Switch to `longStackSupport` (default `false`).

This replaces `longStackJumpLimit`, as that concept was not well-conceived. It also changes the default from turning on long stack traces to turning them off.

Fixes #264.
Version 0.9.5 release notes
Correction to change log

Generators for ES6 were introduced in previous release.
0.9.5

(Minified)
Bandaid for recognizing inspectable promises

This helps but does not fix the problem of recognizing our own brand of
promises, as distinct from promises from earlier versions of Q or other
libraries (promise-alikes).