Updated to use new BC Developer Exchange API

Updated to use the new BC Developer Exchange API.

• The URL changed to 'https://embed-bcdevexchange-prod.pathfinder.gov.bc.ca/api/issues/'
• The JSON response changed.

Release 2

• Get t.co length from twitter help/configuration API
• Use ellipsis unicode rather than three dots
• General code cleanup

First release

First version of the bot that is deployed and running in production (my raspberry pi).