fluidsynth 2.0 beta2

Second beta release of fluidsynth 2.0: Adds missing accessor functions to the soundfont loader API, fluid_synth_process() received a new (real) implementation and the ramsfont API has beed removed. For further information please refer to the mailing list:

https://lists.nongnu.org/archive/html/fluid-dev/2018-07/msg00010.html