Aiosqlite Wrapper
- Added `DBHandler` class for simple database queries
- Added DB methods: `all`, `one`, `exec`
- Added support for transactions with `start` and `close`
Help Command
- Added `bot.add_help_command` to activate a custom help command
- Added `HelpStyle` to choose the style of the help command
- Added `ezcord.Cog` class to modify help command categories
Other Changes
- Added `bot.add_ready_info` and `bot.remove_ready_info` for easy ready event modification
- Added more examples