Prefer transition names which match exactly

Some transitions are substrings of other transitions, and the current
loop sometimes never chose the correct one. For example, it would never
choose "QA" if there were also a transtion "Deploy to QA". Ditto for
"Open" and "Reopen".

commands.go

@@ -666,6 +666,9 @@ func (c *Cli) CmdTransition(issue string, trans string) error {
 			transName = name
 			transID = id
 			transMeta = transition.(map[string]interface{})
+			if strings.ToLower(name) == strings.ToLower(trans) {
+				break
+			}
 		}
 	}
 	if transID == "" {