Merge pull request #467 from ydah/v0.6.10 #1386

Job	Run time
test-memory (head)	36s
check-misc (head)	7s
steep-check (head)	18s
test-ruby (head, master)	5m 56s
test-windows (head)	1m 39s
test-ruby (3.0, master)	6m 30s
ruby-versions / Generate Ruby versions	3s
test-cpp (head, g++)	17s
test (2.5)	24s
test-cpp (head, clang++)	23s
test (2.6)	25s
test (2.7)	25s
test (3.0)	12s
test (3.1)	16s
test (3.2)	17s
test (3.3)	11s
test (head)	13s
	18m 12s

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