Restructure configuration file, support additional cover art names/filetypes, bump version.

[Gerald Cox]

1. Bump version to 1.1.0
2. Change configuration file from executable script to text file
3. Support cover art filenames of albumart, cover and folder
4. Support cover art filetypes of gif, jpg, jpeg, png and tiff

‌

[transflactoken]

Resolve Issue #3

→ <<cset 49000c76aa7a>>