make all commands be repo-wide by default
- refactor code in commands.py so that:
if no pattern is given, the command will be repo-wide
else it will work on the working dir
- update the doc
- fix the tests
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changeset: 0:acb14030fe0a
tag: tip
user: test
date: Thu Jan 1 00:00:00 1970 +0000
summary: test
rolling back last transaction
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