Recent macOS does not come with Python 2 anymore. People should install Python 3, which is usually available as `python3`

Define RefSetArray template to define arrays indexed by listIdx and refIdx

See merge request !2434

Clean up MMVD related code

See merge request jvet/VVCSoftware_VTM!2435

M60678: ballot comments of FI_03

See merge request !2436

Rename LFCUParam data structure

See merge request !2431

JVET-AB0135 and BC#017 Add nnpfc_total_kilobyte_size and replace nnpfc_complexity_idc with a flag

See merge request !2432

JVET-AB0069 change the length of the po_sei_processing_order[i] syntax element

See merge request !2433

length change

Rename dynamic_cache to Pool

See merge request jvet/VVCSoftware_VTM!2430

Use strong typed enum for SEI payload type

See merge request jvet/VVCSoftware_VTM!2423

Clean up ISP and use strong typed enum

See merge request jvet/VVCSoftware_VTM!2422

Define named reference index for IBC

See merge request !2429

This class contains a pool of objects that can be used and reused
while minimizing the amount of required memory allocation and
deallocation operations

JVET-T0056: SEI manifest and SEI prefix indication

See merge request jvet/VVCSoftware_VTM!2096

Clean up reading/parsing of number of active refs

See merge request jvet/VVCSoftware_VTM!2427

Use named variable for unset cost

See merge request jvet/VVCSoftware_VTM!2426

Use named constants

See merge request jvet/VVCSoftware_VTM!2425

Fix compilation when disabling REUSE_CU_RESULTS

See merge request jvet/VVCSoftware_VTM!2424