Snip v2.5.0

* Changed the readonly values to consts and renamed them.
* Embedded the blank image as a byte array instead of having a separate
Snip_Blank.jpg.
* Created a SaveBlankImage() method that saves the blank image in case
of any error.
* Changed the way I get Spotify album artwork.  It now uses the regular
Spotify HTML page instead of the embed page.  This provides a lower
resolution image than previously but it works.
* Added a ImageFromByteArray() method that converts a byte array to an
Image.