upgrade gravity version to v0.9.62 (#28)

go.mod

@@ -18,13 +18,12 @@ require (
 	github.com/jinzhu/inflection v0.0.0-20180308033659-04140366298a // indirect
 	github.com/juju/errors v0.0.0-20181118221551-089d3ea4e4d5
 	github.com/modern-go/reflect2 v1.0.1 // indirect
-	github.com/moiot/gravity v0.9.49
+	github.com/moiot/gravity v0.9.62
 	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
 	github.com/prometheus/client_golang v0.9.3-0.20190127221311-3c4408c8b829
 	github.com/serialx/hashring v0.0.0-20180504054112-49a4782e9908 // indirect
 	github.com/sirupsen/logrus v1.2.0
 	github.com/spf13/pflag v1.0.3 // indirect
-	github.com/tidwall/pretty v0.0.0-20190325153808-1166b9ac2b65 // indirect
 	github.com/ugorji/go/codec v0.0.0-20181209151446-772ced7fd4c2 // indirect
 	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
 	gopkg.in/go-playground/validator.v8 v8.18.2 // indirect

go.sum

@@ -7,6 +7,8 @@ github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/DataDog/zstd v1.3.5 h1:DtpNbljikUepEPD16hD4LvIcmhnhdLTiW/5pHgbmp14=
 github.com/DataDog/zstd v1.3.5/go.mod h1:1jcaCB/ufaK+sKp1NBhlGmpz41jOoPQ35bpF36t7BBo=
+github.com/OneOfOne/xxhash v1.2.5 h1:zl/OfRA6nftbBK9qTohYBJ5xvw6C/oNKizR7cZGl3cI=
+github.com/OneOfOne/xxhash v1.2.5/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q=
 github.com/Shopify/sarama v1.19.0/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
 github.com/Shopify/sarama v1.20.1 h1:Bb0h3I++r4eX333Y0uZV2vwUXepJbt6ig05TUU1qt9I=
 github.com/Shopify/sarama v1.20.1/go.mod h1:FVkBWblsNy7DGZRfXLU0O9RCGt5g3g3yEuWXgklEdEo=
@@ -224,8 +226,8 @@ github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJ
 github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
 github.com/modern-go/reflect2 v1.0.1 h1:9f412s+6RmYXLWZSEzVVgPGK7C2PphHj5RJrvfx9AWI=
 github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
-github.com/moiot/gravity v0.9.49 h1:GkBbWRo8gBaAbxYOGY/YW6SCjoYogwyFWY8DJfxQYfg=
-github.com/moiot/gravity v0.9.49/go.mod h1:f2FBbO6ui9fLCc1F6ns777bTafNFRZZ3KRR1Tzzj2jE=
+github.com/moiot/gravity v0.9.62 h1:6wmGG7u65y7qFZNb+Yw05DeUMoqd60w2kFTyamy+Vis=
+github.com/moiot/gravity v0.9.62/go.mod h1:8OXej7R9yYyiV0tqPmfX9fNJELRH/2d+eGo808uDnlQ=
 github.com/montanaflynn/stats v0.0.0-20180911141734-db72e6cae808 h1:pmpDGKLw4n82EtrNiLqB+xSz/JQwFOaZuMALYUHwX5s=
 github.com/montanaflynn/stats v0.0.0-20180911141734-db72e6cae808/go.mod h1:wL8QJuTMNUDYhXwkmfOly8iTdp5TEcJFWZD2D7SIkUc=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=