Merge branch 'master' of https://github.com/tildearrow/furnace into es5506_alt

* 'master' of https://github.com/tildearrow/furnace:
  fix sample saving
  add extra FM effects to effect post handler
  dev91 - it's a breaking change
  aaaaaa
  AY8930: Fix tone and noise period in expanded mode.
  OPL: fix possible crash

src/engine/sample.cpp

@@ -75,7 +75,7 @@ bool DivSample::save(const char* path) {
   }
   sf_command(f, SFC_SET_INSTRUMENT, &inst, sizeof(inst));
 
-  sf_write_short(f,data16,length16);
+  sf_writef_short(f,data16,samples);
 
   sf_close(f);