Merge pull request #19 from davxy/master #9

Job	Run time
validate (erasure)	28s
validate (codec)	28s
validate (traces)	32s
validate (stf/authorizations)	28s
validate (stf/reports)	35s
validate (stf/preimages)	27s
validate (stf/history)	19s
validate (stf/disputes)	33s
validate (stf/accumulate)	21s
validate (stf/safrole)	31s
validate (stf/statistics)	25s
validate (stf/assurances)	21s
	5m 28s

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