cosi.verify was renamed to verify_combined, because it is pretty much
ed25519.verify, and the new name implies what it does in terms of the
CoSi scheme: verify a signature with already-combined public keys.
cosi.verify_m_of_n signature was simplified by not requiring the `n`
parameter, which is not important for verification. The updated function
was renamed to cosi.verify, because this is the standard CoSi
verification operation: given signature, digest, required number of
signatures, sigmask, and a list of public keys, verify that enough
signatures are indicated and that they sign the digest.
This deserves some explanation.
* tests were moved to separate python/tests subdir
* trezorlib was moved to python/src, so that it does not exist on
PYTHONPATH by default
(see https://blog.ionelmc.ro/2014/05/25/python-packaging/ for details)
* everything was updated to understand the new structure
* trezorctl was changed from a top-level executable script to a module
`trezorlib.cli.trezorctl` and is installed via the entry_points
mechanism.
This should make it work normally on Windows!
The package should be installable as normal through pip and pipenv, no
changes are needed on that side.
The source package from pypi will include unit tests. (Device tests were
completely moved out). Wheel will exclude them, because users don't need
them.
That shrinks the .whl from 520 kB to 270 - nice!
python: reorganize remaining unit tests
