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/quasoft/memstore/cache.go

@@ -0,0 +1,40 @@
+package memstore
+
+import (
+	"sync"
+)
+
+type cache struct {
+	data  map[string]valueType
+	mutex sync.RWMutex
+}
+
+func newCache() *cache {
+	return &cache{
+		data: make(map[string]valueType),
+	}
+}
+
+func (c *cache) value(name string) (valueType, bool) {
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+
+	v, ok := c.data[name]
+	return v, ok
+}
+
+func (c *cache) setValue(name string, value valueType) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	c.data[name] = value
+}
+
+func (c *cache) delete(name string) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	if _, ok := c.data[name]; ok {
+		delete(c.data, name)
+	}
+}