Handle errors with no stack correctly
Merge pull request #177 from golyshevd/i176

Handle errors with no stack correctly
2.0.3
Use vow-glob instead of just glob
Create Tracker.prototype.include
* This method allows to add plugins by glob-patterns
* Remove this behaviour from Tracker.prototype.plug
Merge pull request #179 from golyshevd/include

Include
Add failing test
Automatically add unit path to cache key parts
Merge pull request #180 from golyshevd/i178

I178