Quality and sizing of thumbnail images need improvement.

[fujinaga]

Tall and wide images in Wikidata are cropped too much in the square thumbnails (pad with white space?), e.g., Electric Bass Guitar (Q64166304](https://www.wikidata.org/wiki/Q64166304)) and Pochetter (Q1094813).

Some seems to be scaled wrongly, for example: Ab Clarinet (Q961470) and Batyphone (Q36973404) (the original is not great.)

Some are missing: Adungu (Q3605859), Superbone (Q2786107), Harmoneon (Q3127548)