CsoundAC

Removed setting thisown=0 in CsoundAC Python interface (#27).

Csound for Android

Disable orientation by sensor if widgets are used in Csound for Android app (#33).

Changed User Guide to .pdf in Csound for Android app (#35).

Don't try to "Save as..." if there is no file to save in the Csound for Android app (#36).

Created a foreground service to keep the Csound for Android app running in the background.

In Lua opcodes use C snprintf insteadl of C++ std::snprintf to work around NDK bug.

Updated permissions.

Improved some examples.

Embedded a basic SoundFont and some HRTF data files as Csound resources for WebAssembly (#32).

Improved some examples.