* clean_empty_tags a new config option * bugfix, 0.5.2 was indeed broken
0.5.2
* normalize tags: avoid creating artificial changes when creating an empty 'tags' stub in metadata * on the contrary, all empty tags get removed from metadata altogether (this behaviour could be configurable in the future)
0.5.1
* richer config, both levels and frame can be configured through a native config (color for levels, border for frame) + a free css style