Chat markup

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