Merge pull request #952 from GLolol/aka-2

Aka: add 'list' command & update listCommands override
plugins/__init__.py: remove some unused? imports
Quote: add 'replace' command
Topic: remove duplicate import
Topic: allow specifying a commalist of topic numbers in 'remove'
Merge pull request #972 from GLolol/topic-1

Topic: remove duplicate 'import re'
Merge pull request #971 from GLolol/plugin-init

plugins/__init__.py: remove some unused imports
Topic: switch 'remove' to many instead of commalist
Topic: add test for removing multiple topics
Topic: allow configuring whether the separator is allowed in topics
Merge pull request #975 from GLolol/topic-remove-commalist

Topic: in 'topic.remove', allow specifying multiple topic numbers to remove
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.
Merge branch 'testing' into lilybot