MISC: Update Readme based on the use of SoundTailor library

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
EXTERNALS: Update SoundTailor version used here

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
EXTERNALS: Update to latest SoundTailor version

This fix direct phase control issues.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
BUILD: Add Missing file in builds

This is only convenient for browsing msvc solutions since the file is
a header.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
COMMON: Add utilities for scalar Sample access

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
TESTS: Add a predicate to check Sample continuity

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
GENERATORS: The factory now takes a phase to set the new generator to

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
GENERATORS: Fix factory warning

This is about a part of the code that should never be met anyway.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
VCO: Fix smooth waveform changes

This is using the generators ability for direct phase control.
However it adds a new store within the process function - optimization
will show if this is too much.

Signed-off-by: Gama <misept.dieseneuf@gmail.com>
VCO: Add a first test for VCO, checking smooth waveform changes

Signed-off-by: Gama <misept.dieseneuf@gmail.com>