Added

Two new config vars:
- ENABLE_PLUGINS (yes/no default yes), when set to no, plugins will not be loaded into the bot.
- ERROR_COLOR (color format, defaults discord red), the color of error messages.

Changed

?contact no longer send the "thread created" message to where the command is ran, instead, it's now sent to the newly created thread channel. (Thanks to DAzVise)
Plugins update (mostly internal).
- git is no longer used to install plugins, it now downloads through zip files.
- ?plugins enabled renamed to ?plugins loaded while enabled is still an alias to that command.
- Reorganized plugins folder structure.
- Logging / plugin-related messages change.
- Updating one plugin will not update all other plugins (plugins are no longer separated by repos, but the plugin name itself).
Help command is in alphabetical order grouped by permissions.
Notes are no longer always blurple, its set to MAIN_COLOR now.

Reworked config.get and config.set, it feeds through the converters before setting/getting.
- To get/set the raw value, access through config[].
Prerelease naming scheme is now x.x.x-dev.