This conforms to original specification, which allow `Mon Md-Mon Md' ranges
Revent change of variable name

It's no longer `start of this year' after the second line, so using
such variable name would be misleading.
Remove extra space
Merge branch 'ypid-master-merge'

This merges master branch of ypid fork, with some minor rollbacks
from me.
Merge branch 'feature'

Conflicts:
	test.js

New features seem to be ready for production.
Fixed spelling.
Added tests for examples used in the README.
Removed console.log() used for debugging.
Made behavior for unknown in daywrap consistent with open state.

Daywraps are not yet implemented right (as people would expect it to work).
Netzwolf has it also implemented this way.
This needs to be fixed.
Added supports year ranges.