Fix NaN crash in QuakeC PlayerPostThink function

Don't know 100% this fixes it, but I think it should..

6DoF Overhaul

Significant changes in this release:

• Fix for warping effect some players experienced
• Fix for the distortion when looking up and down
• Fixed the unintentional player movement when moving the weapon
• Weapons are now fully 6DoF and are located where the controller is
• Additional "Bullet Time" mode added

Couple of significant fixes

• Command line parameters now working again
• Using symmetrical render target to hopefully reduce "warping"
• Use ever so slightly reduced FOV as I think previous value was a little too high (also to reduce "warping")
• Updated to version 1.3.0

Fix for latest Oculus Update issues

Fixes issue with controllers in latest Oculus Update. Also adds following:

• Update to Oculus Mobile SDK 1.24
• Update to Android API level 24
• Requests Permissions when App starts

Head Orientation Tracking now Correct

Thanks to the work on my other current VR project, I found a much better way of calculating the Euler Angles from the orientation Quaternion provided by the Oculus Mobile SDK. I now do the following conversion and it works perfectly, no more sticky head tracking sensation when looking up or down:

Quaternion -> Rotation Matrix -> Euler Angles

Honestly the difference is night and day!

Small bug fixes

• Fixed issue with disabling bullet-time mode not working
• Slightly increased minimum speed during bullet time, was too slow
• Moved screen when showing menu/console slightly closer to make easier to read

Bullet Time Mode + Other fixes

This release brings some new features:

• Bullet-Time VR Mode: a blatant display of plagiarism, time progresses as you move yourself or your weapon, inspired by the Quake Mod SUPERQOT (courtesy of the SUPERHOT team)
• 3DoF weapon mode for those that don't like the slight movement 6DoF weapon introduced

...and fixes to a few things:

• Text Input now correctly allows you to join a multiplayer game (for more info on using text input, please see release notes for v1.1.0)
• Weapon scaling improvements

Text Entry and Other Improvements

This release brings a way to type into the console or type in order to start multiplayer games:

• Press Y to bring up the "keyboard" and Y again to exit text entry mode
• Push left or right thumbstick to select the character
• Press Trigger on the appropriate controller to type the selected character (or center character if no thumbstick direction is pushed)
• Press grip trigger on controller to cycle through the available characters for that controller
• Press B to Delete characters
• Press A for Enter/Return

Other improvements:

• Increased FOV and screen coverage
• SuperSampling wasn't actually active, it is now, delete commandline.txt in order for it to work
• Improved clarity of the console

Initial Release

First release of QuakeQuest. Please see the readme for more details.