JVET-AD0169: Downsampling filters in range 1.1 to 1.35 based on Kaiser(7) windowed sinc

See merge request !2583

Fix #1599: include frame rate info in bitstream when provided in y4m file

See merge request !2587

Express frame rate as ratio of two integer values throughout code
using struct Fraction

Add support for defining fractional frame rate from command line

Remove previous cycle macros

See merge request !2584

Revert !2573 and add MultiLayerEnabledFlag=1 to two_layers.cfg

See merge request jvet/VVCSoftware_VTM!2582

Port changes from JVET-Z0072 to performance low delay configuration file

See merge request jvet/VVCSoftware_VTM!2577

Fixes for multilayer coding

See merge request jvet/VVCSoftware_VTM!2580

Fix type of literal in assert expression

See merge request jvet/VVCSoftware_VTM!2578

Length of syntax element can be up to 63 bits.

JVET-Z0072: enhanced referencing configs for random access and low delay

Without this fix, the "performance" low delay configuration file yields
worse R-D performance than the "regular" low delay configuration

Shorten Neural Network Post Filter Characteristics SEI parameters

See merge request jvet/VVCSoftware_VTM!2576

Fix compilation when EXTENSION_360_VIDEO is enabled

See merge request jvet/VVCSoftware_VTM!2575

Shorten parameter names to NNPFC to save space in user manual (an maybe make them easier to type).

No specific table formatting is required for NNPFC anymore.

Rollback SEI bits computation as it is erroneous

See merge request jvet/VVCSoftware_VTM!2574

Fix #1595: Set ptl_multi_layer_enabled_flag when more than one layer is encoded

See merge request jvet/VVCSoftware_VTM!2573

Add command line option to print per-frame encoding time in float format

See merge request jvet/VVCSoftware_VTM!2572