SF2 player: fix playback issues
Changing the velocity after noteon doesn't really seem to work on fluidsynth (may be dependent on soundfont file) - seems like the panning changes when velocity is changed.
So I disabled that, after which everything works fine.
Merge pull request #877 from diizy/stable-1.0

SF2 player: fix playback issues
Italian Localization Update

I've updated the Italian translation of the program using Qt linguist.
Merge pull request #882 from DeRobyJ/stable-1.0

Italian Localization Update
DspEffectLibrary: fix stereoenhancer
Use channel -1 for GUI-generated MIDI events, fixes #807
Merge pull request #909 from diizy/stable-1.1

Some fixes: StereoEnhancer, Midievents
Lmms_math: add dBV conversion functions (for future use)
Monstro: improve accuracy of env release
Merge pull request #910 from diizy/stable-1.1

Math, Monstro
Revision of handling of frameoffset for NPH, SPH
Change in handling of frameoffset for multistreamed instruments and sampletracks.
- Instead of holding the offset for the lifetime of the playhandle, negate the offset in the first period
- Multistream-instruments require some small changes: they have to now check for the offset and accordingly leave empty space in the start of the period (already done in this commit)
- There are possibly optimizations that can be done later
- This change is necessary so that we can have sample-exact models, and sample-exact vol/pan knobs for all instruments. Earlier multistream instruments were always rendering some frames ahead-of-time, so applying sample-exact data for them would have been impossible, since we don't have the future-values yet...
Addition to earlier: Fix monstro
Sample-exact models: improve
- Remove the redundant hasSampleExactData() function. Instead, signal lack of s.ex.data by returning a NULL in valueBuffer()
- Cache s.ex.buffers and only update them once per period
- Make valueBuffer() in AutomatableModel threadsafe so that it can be used for NPH's sharing the same model
- Add sample-exactness to instrumenttrack's vol & pan knobs
Merge pull request #912 from LMMS/stable-1.0

Syncing...
Merge pull request #913 from LMMS/stable-1.1

Syncing...
Merge pull request #911 from diizy/master-nph

Revision of handling of frameoffset for NPH, SPH