Critical Bug Fixes & Enhancements

• The timer was not working due to a bug with the setTimeout function. It should be fixed now.
• Added a 'refreshed' time to display the last time the widget updated the data. This is different from the 'updated' date which reflects the data freshness and is provided by coinmarketcap via their API.
• The date formats were shortened because only the time is really relevant.
• Added functionality to check for a new update automatically using GitHub tags. Checks for new GibHub tags every 24 hours and displays a link if a new tag is found.
• Removed 'en-US' parameter. Now passing undefined which should default to the local locale.