Support for years in composers

In a long process I’ve added years to all my classical composers, so they look like this: “Chopin, Fréderic (1810-1849)”. Roon does not like them so I to fix this by hand. What about ignoring brackest in existing composer tag fields?

A huge amount of the metadata automatically added by XLD has this too. Automatically stripping it is not a bad idea.

Moved to feature requests