Finally learned how to create tables with methods.
Thus, rewrote the progressbar as a coherent and logical object rather than just a bunch of loosely related functions.

Refined some code, nothing special.

Added suppport for my charge generation system.
Added a check routine to determine whether an addon is mounted or not.
Both very experimental.

Corrected a minor issue involving bar and title colors.
Added a description and a how-to to the progress bar
entry.