Quote: add 'replace' command
Topic: allow configuring whether the separator is allowed in topics
Topic: run autopep8 on plugin.py
Quote: add tests for 'replace'
Merge pull request #974 from GLolol/topic-allow-separator

Topic: remove limitation forbidding the topic separator in topic.add
Merge pull request #973 from GLolol/quote-replace

Quote: add a 'replace' command
travis.yml: “It will make your build faster”, they say.
Revert "travis.yml: “It will make your build faster”, they say."

This reverts commit bc215d72be6184764f0ba28981739467dcabc03a.
rm .travis.runonce.bash

It was supposed to perform tests that are only wanted to run once and it
was also supposed to be possible to run outside of Travis, but no one
ever looks in it at Travis and no one runs it manually. Even I use
`sandbox/check_trans.py`.
Merge pull request #977 from Mikaela/travis

rm .travis.runonce.bash