Linux

Store `SymbolicRegression.Options` in `.sr_options_` #1359

Job	Run time
conda_test (3.9, ubuntu-latest)	10m 46s
incremental_install	13m 51s
test (1.9, 3.10, ubuntu-latest)	13m 54s
Check types (3.10)	2m 50s
Indicate completion to coveralls.io	13s
	41m 34s

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