2.0.0

This version is not compatible with previous releases.
Changes have been made to the plugin API. Now it should be more convenient.
The formats for writing to configuration and database files have been changed.
Added dependency on CommandPack plugin.
The code of the plugin commands has been reworked. Now autocomplete of arguments works much better by using Raw type command API in CommandPack plugin.
Changed command schemes responsible for changing player limits.
Fixed various minor bugs in the code.