Version 0.7.0

I'm currently rewriting most of the code to be more flexible, maintainable, and extensible. This is taking a lot longer than expected, so I decided to make a "maintenance" release to fix some small gripes while working on the rewrite. This rapidly turned into a large number of features being squeezed in to the old code, not all in the best ways. Oh well.

Changes

• Camera zoom (on scroll wheel) now works
• Objects which feature coincident triangles (overlays) now render correctly
• More texture formats are now supported by the loader (IT_A1BGR5 specifically)
• Gui style has been changed to a light style and the font has been replaced with a similar font to the kh2 system font.
  • 'Light Mode' related complaints should be directed to your optometrist.
• Depth based smoothstep fog has been implemented.
• You can alter the color, start and end of fog, along with the clear color, the field of view and the near/far clipping depth
• PVD files can now be loaded to set the above values.
• The internal PMP/PMO representations have been updated with the latest knowledge.
• Texture scrolling is now implemented.
• PMO mesh attributes are now supported, so two-sided and transparent/semi-transparent meshes are now handled better.
• Meshes are now rendered in two passes, solving many transparency ordering issues.
• Back face culling is now enabled by default
• There should be less texture sampling errors at the edges of textures now.
• The viewer should crash less when loading invalid/incomplete PMP files.