added stricter joining of annotated fields #501

Job	Run time
linux-64-py3.10	5m 59s
estimation_mode_test	16m 4s
macOS	16m 45s
prototype_mtc	42m 8s
win-64	9m 9s
develop-docbuild	0s
prototype_arc	50m 24s
prototype_mtc	44m 48s
placeholder_psrc	35m 9s
prototype_psrc_in_development	3m 46s
random_seed_generation_test	2m 28s
prototype_marin	1m 26s
prototype_mtc_extended	1h 57m 13s
placeholder_sandag	1h 55m 10s
prototype_sandag_xborder	4m 8s
production_semcog	5m 7s
prototype_mwcog	43m 48s
placeholder_multiple_zone	7m 35s
	8h 41m 7s

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