release 1.4.1 of xapi-schema #496

Job	Run time
test (test-lib-clj)	54s
test (npm-audit)	32s
test (test-lib-cljs)	1m 35s
test (test-conformance-clj-async)	1m 59s
test (test-conformance-cljs)	2m 54s
test (test-conformance-clj-sync)	2m 2s
	9m 56s

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