* return error for wrong key
* payment check use key dependency
* more expressive error
* re-add optional key
* more tests
* more
* more granular
* more testing
* custom event_loop
* tests work
* fix lots of mypy errors
* test_public_api
* both files
* remove unused import
* tests
* tests working
* rm empty file
* minimal test
* set FAKE_WALLET_SECRET="ToTheMoon1"
* set FAKE_WALLET_SECRET="ToTheMoon1"
* trial and error
* trial and error
* test postgres
* test postgres
* test postgres
* test postgres
* test postgres
* test postgres
* test build
* skip mypy
a big refactor that:
- fixes some issues that might have happened (or not) with asynchronous
reactions to payments;
- paves the way to https://github.com/lnbits/lnbits/issues/121;
- uses more async/await notation which just looks nice; and
- makes it simple(r?) for one extension to modify stuff from other extensions.
