assemble/assemble — pull request #360 by adjohnson916 (2013-10-17 05:03:42+00:00)
Title: add support for plugins running once, before and after #2

Rebased version of PR #359.

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Addresses #357. Look at the code - I can explain if it isn't clear. I added test cases.

This is fully backwards compatible - the default "stage" is "each", but "before" and "after" are opt-in.