Ye olde Instrumentation and Tests.

Added

• Instrumentation, Thanks to The Cherno / Hazel project)
  The flag MYODDWEB_PROFILE needs to be set to 1.
• Version number for unmanaged myoddweb.directorywatcher helper.
• A whole lot of unit tests.

Changed

• Helper is no longer backward compatible! If you are using another app to call the helper you will need to use my sample(s) to reconnect.
• Various code optimisations.
• Various performance / memory fixes
  • Some code now running is parallel to speed-up the processing of folders/files that have changed.
• Minor other improvements

Fixed

• If a callback throws an error ... or misbehaves, it no longer kills the entire process.
• There was a bug in 0.1.6 where multiple (sub)folders watcher are created.