Get all currently active reroutes.
https://developer.mtd.org/api/{version}/{format}/getreroutes
	These results include all reroutes and the routes that they affect for specified routes
	message and description fields will use a \n and 
 character for line breaks in the JSON and XML endpoints respectively.
Note that, due to the nature of our real-time system, we cannot show information about the stops that reroutes affect.
| key | (required) your API key | 
| changeset_id | (optional) see interpretting responses for more information | 
| start_date | approximate start date of the reroute | 
| end_date | approximate end date of the reroute | 
| message | a short message describing the reroute. | 
| description | a more complete description of the reroute | 
| affected_routes | all routes that are affected by a reroute |