Merge pull request #960 from khaledhosny/mkmk-mark-filter-sets #2548

Job	Run time
Rustfmt	1m 0s
resources/scripts/ots_test.sh	1m 11s
cargo check no std	1m 33s
Build GS and check the result	3m 16s
Clippy lints	1m 20s
cargo test fea-rs	1m 11s
fontbe tests	56s
fontc tests	1m 18s
tests other than fontbe,fontc	1m 50s
	13m 35s

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