Handle Selects being de-selected

• Handle Selects being de-selected

Fix Allowed_Mentions processing

Fixes how allowed_mentions are processed in SlashMessage._slash_edit

Disable Selects

Add the ability to disable selects

Minor Bug Fix

Adds a none check to wait_for_component

Various improvements

• Add cog_ext permissions decorator #237
• Handle incorrect component datatypes #245
• Mirror d.py allowed mentions behaviour #231
• Mirror d.py edit behaviour #230
• Doc changes
• Pre-push Changes

Select Support

Adds select support

Fix another url issue

Stops context trying to get custom_id from url buttons

Fix url button bug

Fix get_components_ids when passing rows with URL ButtonStyle #220

*HOTFIX* Fix global command issue

Restore the ability to create global commands

Fix internal logic issues

Fix improper usage of is and is not