Initial simplified build system based on GNU Make
Remove puredata and MaxMSP examples
Actually add Makefiles!

- Not added in previous commit due to being in .gitignore
Add examples to new build system
Fix bug in paths
Move xtract inside "include" directory
Add "install" target
Tidy up .gitignore
Delete unneeded files
Add Doxygen to build system
Remove unmaintainable relative paths
Various improvements
Remove Java bindings
Add Python bindings to build system
Merge branch 'feature/no-autotools' into develop
Initial unit testing setup with an example test
Update travis yaml
Add xttest to gitignore
Add more F0 tests
Add F0 quantization test