Implement handlers to normalise how logging is handled

Gopkg.lock

@@ -26,7 +26,8 @@
   name = "github.com/apex/log"
   packages = [
     ".",
-    "handlers/cli"
+    "handlers/cli",
+    "handlers/json"
   ]
   revision = "0296d6eb16bb28f8a0c55668affcf4876dc269be"
   version = "v1.0.0"
@@ -43,6 +44,12 @@
   packages = ["quantile"]
   revision = "4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9"
 
+[[projects]]
+  name = "github.com/fatih/color"
+  packages = ["."]
+  revision = "507f6050b8568533fb3f5504de8e5205fa62a114"
+  version = "v1.6.0"
+
 [[projects]]
   name = "github.com/golang/protobuf"
   packages = ["proto"]
@@ -174,6 +181,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "5405ce55dbd69df4847de599c4e30d7540f208db389b67f2c9789ef6c17351d0"
+  inputs-digest = "6b04c53f65567785f5fc4ea3563d11c7744c450d1a0c45c0b8047ad10bf766ea"
   solver-name = "gps-cdcl"
   solver-version = 1