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/go-pg/pg/v10/pgjson/json.go

@@ -0,0 +1,26 @@
+package pgjson
+
+import (
+	"encoding/json"
+	"io"
+)
+
+var _ Provider = (*StdProvider)(nil)
+
+type StdProvider struct{}
+
+func (StdProvider) Marshal(v interface{}) ([]byte, error) {
+	return json.Marshal(v)
+}
+
+func (StdProvider) Unmarshal(data []byte, v interface{}) error {
+	return json.Unmarshal(data, v)
+}
+
+func (StdProvider) NewEncoder(w io.Writer) Encoder {
+	return json.NewEncoder(w)
+}
+
+func (StdProvider) NewDecoder(r io.Reader) Decoder {
+	return json.NewDecoder(r)
+}