Topic: allow toggling automatic topic setting via config
Merge pull request #943 from GLolol/topic-1

Topic: allow toggling automatic topic setting via config
src/conf.py: clear hosts4 & make hosts6 ::0

Closes #756
Fixes #935
Merge pull request #944 from Mkaysi/ipv6

src/conf.py: clear hosts4 & make hosts6 ::0
Unix: log shell and call commands at INFO (Closes ProgVal/Limnoria#929)
Unix: update logging
Unix: Update logging again
Merge pull request #947 from GLolol/unix/log-commands

Unix: log shell and call commands at INFO
PluginDownloader: improve README.md

featuring ~~faked~~ log of installing Wikipedia plugin.

[CI SKIP]
Merge pull request #950 from Mikaela/plugindownloader

PluginDownloader: improve README.md
Aka: Fix typo and help for 'show'

Help for 'aka show' should now mentions the --channel argument (this
was implemented but not mentioned).
QuoteGrabs: Prevent quote grabs from queries.
Merge pull request #951 from GLolol/aka-1

Aka: Fix typo and help for 'show'
Seen: insert a witty message when calling seen/any on the bot
Network: add 'networks --all' option
Merge pull request #956 from GLolol/network/networks-all

Network: add a 'networks --all' option
Seen: fix for tests
Merge pull request #957 from GLolol/seen/self-nick

Seen: insert a specific message when calling seen/any on the bot
User: this is core Supybot plugin, not module
Merge pull request #960 from Mikaela/user

User: this is core Supybot plugin, not module