Patch 2.2.3

#49 Fix race condition with #shutdown, submitted by @Rexeh

Patch 2.2.2

Fixed #45, provided by @Ruslan-700.

Patch 2.2.1

• ping fix provided by @cat24max

Update 2.2

Support constant connections and made minor improvements.

Patch 2.1.5

• General doc improvements
• Reduces the login spam

Patch 1.3.7

Added deprecation notice and fixed issue #20.

Patch 2.1.4

Fixed issue #20

Patch 2.1.3

• Fixed two simple bugs, regarding banPlayer() and addBan()
• Enhanced parameter type checking

Update 2.1.2

Following now PSR-2 coding standard with improved phpDoc comments

Update 2.1.1

Coming with improved docs and other enhancements.