v2.3.0 - Repetition legitimises

Summary

Added recurring reminders and mod messages.

Repetition legitimises.

New features

• [modtools] Added .say command. Allows bot to send messages in channels (mod only) (#275 - partial)
• [reminder] Added .saylater command. Allows scheduling a message for bot to send in channels (mod only) (#275 - partial)
• [reminder] Added recurring reminders and scheduled messages (#274)
• [reminder] Added .reminder rem and .saylater rem to allow removing individual reminders (#306)
• [fuck] Added fuck module.

Bugfixes

• [help] In in-bot help, fixed newlines are preserved when using certain YAML syntax. Paragraphs are now reflowed (paragraph breaks are preserved, according to Markdown rules). #308

Repetition legitimises.