3.1 - Fixes

General Changes:

• Bumped Version to 3.1.0 & Exiled Version to 4.1.0 as the minimum.
• Fixed SCP lockers being able to be opened with just about any keycard. (Issue #2)

Technical changes:

• Due to how the previous issue was fixed, plugins using PlayerExtensions.HasKeycardPermission will need to be recompiled with this plugin.
  ^This is most likely not the case for any plugin, but for those developers who use this as a dependency, just hit a recompile. (I haven't been told of any official plugins using this as one, so most server hosts should be alright)