fdsn

update sc3ml_0.13__quakeml_1.2.xsl to convert event tag only #79

Job	Run time
go-test	39s
prepare	6s
golangci-lint / lint	21s
gofmt / go-fmt	12s
go-build / go-build-smoke-test	35s
go-vet / go-vet	36s
build (fdsn-holdings-consumer, ./cmd/fdsn-holdings-consumer) / build	54s
build (fdsn-slink-db, ./cmd/fdsn-slink-db) / build	37s
build (fdsn-ws, ./cmd/fdsn-ws) / build	56s
build (fdsn-quake-consumer, ./cmd/fdsn-quake-consumer) / build	56s
build (fdsn-ws-nrt, ./cmd/fdsn-ws-nrt) / build	54s
	6m 46s

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