Engine 5.06 released

Engine5.06

Another quick update

Bugs fixed in this release
==========================
TextStore003: when checking for renderlength of text (how many pixels) I wasn't skipping the line break ~ tilda characters so this was considerd part of the font with no texture region to support it.

Menu004: hadn't made use of new renderlength code for all tag alignment cases

changes

============
Engine
============
focalLength - added, determines the focal length for perspective projections

ZRange - added, lets you specify the depth of Z values that are acceptable to render, this value is halfed to form the -ve Z back value and +ve front value. The default is 10,000 which give -5000 to 5000 as the range

ZFront - added, retrieves the current maximum allowable Z value for rendering, sprites with values larger than this will not be rendered

ZBack - added, retrieves the current minimum allowable Z value for rendering, sprites with values smaller than this will not be rendered
============
TextureProcessor
============
GetRegionAlphaList() - added, gets a byte array for a given transparent region of a processed texture

GetRegionAlphaGrid() - added, does same as above but produces a 2d array of alpha bytes

============
TextManager
============
GetCharacterAlphaGrid() - added, gets the 2d array of alpha values for a particular character in a particular font

============
Sprite
============
AutoFadeFront - added, this lets you dynamically change the front fade value

AutoFadeBack - added, this lets you dynamically change the back

PerspectiveProjectionOn() - added, lets you turn on perspective rendering for a sprite - EXPENSIVE in terms of CPU

PerspectiveProjectionOff() - added, turns off perspective rendering