Hi! I just discovered the BTT's clipboard manager and I it felt like unwrapping a forgotten Christmas present 
Anyway, I would like to suggest some more security options. I use my password manager KeePassXC a lot, which means I copy & paste passwords fairly often.
Unfortunately, they are all in BTT's clipboard history. That is not good. As a resolution, could you, for example, offer an option to exclude Apps entirely? Then I could select KeePassXC and BTT would ignore things that are copied from that App. I feel like this might be the most generic approach that would also apply to other (password manager) Apps.
Keep up the great work!