Grand test fixup (#138)

* start fixing up tests

* fix up tests + automate with drone

* fiddle with linting

* messing about with drone.yml

* some more fiddling

* hmmm

* add cache

* add vendor directory

* verbose

* ci updates

* update some little things

* update sig

vendor/github.com/vmihailenco/msgpack/v5/.golangci.yml

@@ -0,0 +1,18 @@
+run:
+  concurrency: 8
+  deadline: 5m
+  tests: false
+linters:
+  enable-all: true
+  disable:
+    - gochecknoglobals
+    - gocognit
+    - godox
+    - wsl
+    - funlen
+    - gochecknoinits
+    - gomnd
+    - nlreturn
+    - goerr113
+    - exhaustive
+    - nestif