improve configurability of fast intra decision introduced in JVET-O0050

See merge request jvet/VVCSoftware_VTM!879

- add option to completely disable
- add iparameter to software manual

JVET-O0491: remove tb() and tu() codes

See merge request jvet/VVCSoftware_VTM!878

Fix #476 Scaling list addressing after adding palette prediction (MODE_PLT)

See merge request !877

refactoring SbTMVP to align with spec

See merge request jvet/VVCSoftware_VTM!826

JVET-O0525: Removal of PCM mode.

See merge request jvet/VVCSoftware_VTM!876

  - Remove additional unused variable.

Fix #481 loosen restriction on processing width

See merge request jvet/VVCSoftware_VTM!873

Note that lines 450-457 should already support the loosened
restriction

Clean up and speed up ALF SIMD filter code

See merge request jvet/VVCSoftware_VTM!869

Overall decoder run time is reduced by about 5%

update CMake environment to include Visual Studio 2019

See merge request jvet/VVCSoftware_VTM!867

Fixed decoder analyser

See merge request jvet/VVCSoftware_VTM!866

Fix ticket #465

See merge request !865

Fix ticket #464: Sub-CTU QPA code affects HDR coding via updateLambda() even when sub-CTU QPA is disabled

See merge request jvet/VVCSoftware_VTM!857

Fix getTbAreaAfterCoefZeroOut after merge of !853

See merge request jvet/VVCSoftware_VTM!864