Ian

Fix build with SUPERMODEL_DEBUGGER enabled. Probably last commit as source has moved to git.

njz3: Fix sound volume with new quadrophonic audio code

values must be signed, to handle negative numbers, my bad

minor fix

njz3: Proper quadrophonic audio support. Need 4+ speakers to take advantage otherwise down mixed to stereo.

fix: explicit specialization requires 'template <>'

Double buffer the line of sight values. Should allow the correct values to be returned if GPU threading is enabled.

methods should be marked as noexcept because they cannot throw