Pin pyramid version to <2.0
Pin pyramid version to <2.0

We're still using some things that they removed in 2.0. Fully upgrading to 2.0 looks like it will take some time, as they've significantly reworked the auth system https://docs.pylonsproject.org/projects/pyramid/en/latest/whatsnew-2.0.html#upgrading-auth-20

stevearc/pypicloud,stevearc/pypicloud,stevearc/pypicloud,stevearc/pypicloud