Chat markup

this is going to look really dumb because I have to look most of these up

WIP

For:	Use
Italic	_Italic_
Strikethrough	~~Strikethrough~~
SPOILER: Full line spoilers	/sp Full line spoilers
Partial line spoilers	Partial sp{line} spoilers
Full line monospace	/sb Full line monospace
Partial line monospace	Partial `line` monospace (these are backticks)
Shibe	/shibe Shibe
>Greentext	>Greentext
yay	yay
\\	\\drrampage (or any other emote name)