1.3.4 release to address Issue #16 Issue #14 Issue #9 and Issue #17

Issue #16

Added seamless upgrade module thanks to help and code from pavemen and his MyBB Publisher plugin. Version control is now possible using the cache and upgrade instructions will now be consistent for all versions:

Deactivate plugin
Overwrite files
Activate plugin

Issue #14

Removed on-the-fly custom box type as it has been deprecated by group decision.

Issue #9

Added independent setting for latest_threads module as suggested.

Issue #17

An attempt to clear up an error with headers being sent erroneously causing an irritating error.