Add changelog entry for 3.7.6

Fixed

• Upgraded dependencies.
• Update ESLint config to use preset eslint-config-webkom.

3.7.5

Fixed

• Make sure Don doesn't get highlighted for messages containing "don't", fixed by @Ibuprofen.

3.7.4

Fixed

• Fix a bug where the bot-in-channel check would fail for private groups.

3.7.3

Fixed

• Don't crash when trying to send a message to a Slack channel the bot
  isn't a member of.

3.7.2

Changed

• Remove babel-polyfill, use functions available in Node 0.10 and above instead.

3.7.0

Added

• Valid usernames are now highlighted with an @ before messages are posted to Slack, thanks to @grahamb.
• muteSlackbot option that stops Slackbot messages from being forwarded to IRC, also courtesy of @grahamb.
• ircStatusNotices option that makes slack-irc send status updates to Slack whenever an IRC user
  joins/parts/quits. See README.md for example.

Changed

• Upgraded dependencies.
• Comments are now stripped from JSON configs before they're parsed.
• Configurations with invalid JSON now throws a ConfigurationError.

3.5.2

[3.5.2] - 2015-06-26

Fixed

• Remove old unused dependencies.

3.5.1

[3.5.1] - 2015-06-26

Fixed

• A bug introduced in 3.5.0 where Slack messages sent to IRC wouldn't get parsed.
  Adds a test to confirm correct behavior.

3.5.0

[3.5.0] - 2015-06-22

Added

• commandCharacters option - makes the bot hide the username prefix for
  messages that start with one of the provided characters when posting to IRC.
  A Command sent from Slack by username: message will be posted to the IRC
  channel before the command is submitted.

3.4.0

[3.4.0] - 2015-05-22

Added

• Made it possible to require slack-irc as a node module.