Display buffers as PNG images using ansilove.

This package provides some integration with the ansilove tool,
which is a ANSI and ASCII art to PNG converter.

ansilove repository: https://github.com/ansilove/ansilove/

There are three non-ELisp dependencies of this library:
- ansilove
  to convert files to PNG images,
- Emacs built with ImageMagick support
  to display PNG images created by ansilove,
- ImageMagick with PNG file support
  to display PNG files.

To test this library out open one of files from ansilove's examples
(https://github.com/ansilove/ansilove/tree/master/examples/)
and call `ansilove' (M-x ansilove).