2021-infrastructure-stable

Due in about 10 months (08/15/2020)

changes to versions of things supported and tested should stabilize at least several weeks before the beta

Related issues
	Bug #3113: Use of read_tps_conf is depecrated
	Feature #3147: gmxapi workflow checkpointing
	Feature #3148: Roadmap for gmxapi filesystem interactions.
	Feature #3152: Infrastructure and patterns for expressing public interfaces
	Task #2916: Decide future of symtab
	Task #2999: Move all logging in core library and tools to use MDLogger
	Task #3013: Extend logging levels in MDLogger
	Task #3015: Create central log handle for calls to gmx_fatal
	Task #3033: Clean up and modernize googletest bundling and usage
	Task #3035: Provide central logger in wrapper binary
	Task #3047: Set required versions for GROMACS 2021
	Task #3072: Use gmx::index for indexing instead of int
	Task #3076: Selectively activate MdModules during simulation instead of instantiating all of them
	Task #3096: Multiple time-stepping: correct coupling algorithms, virial calculation and energy output
	Task #3153: Let CMake process module directories earlier to support more modern CMake idioms.
	Task #3155: Unify DD and CPU-GPU gather & scatter

GROMACS