Lock metrics at 1.0.0

Gopkg.lock

@@ -70,6 +70,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "5dbb4b7db532dc553a8522b23f0913aea04bf84bf96ea48d5c1920637edb6af3"
+  inputs-digest = "6ca9d144505195ce3da40f2598509d79c7205b05dddfa38c4a18acc7200a3755"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -30,8 +30,8 @@
   version = "0.8.0"
 
 [[constraint]]
-  branch = "master"
   name = "mcquay.me/metrics"
+  version = "1.0.0"
 
 [prune]
   go-tests = true