1.0.0-beta.4

I said beta.3 would be the last beta release before rc.1, but a lot of bugs in beta.3 were spotted, and have been fixed in beta.4.

The following fixes were implemented:

• The retrieve command now returns the correct values for member roles and exception roles, albeit still raw formatted (#23)
• DM'ing the bot no longer causes it to error (#26)
• The number of roles for a member in the userinfo command and for a server in the serverinfo command are now correct (#27)
• The gateway deactivation subroutine was made more bulletproof (#29)
• The emoji limit in the serverinfo command is now correct (#30)

The following improvements were also made:

• The nickname unhoister has been made more accurate, and now only strips characters that actually hoist nicknames (#24)
• The nickname unhoister now has a strict mode that strips numbers. This is not enabled by default.
• The help command is now better at explaining why you are not able to run a command (#28)