[BUG] [v0.2]: intervals package import pattern broken

[tnixon]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

The new organization of the intervals sub-package (which I generally like), unfortunately breaks the import patterns like:
import tempo.intervals as t_int

Instead, in order to import IntervalsDF, we need to do:
from tempo.intervals import IntervalsDF

Expected Behavior

No response

Steps To Reproduce

No response

Cloud

AWS

Version

v0.2 integration branch

Relevant log output

[tnixon]

We should probably cover import behavior in some integration tests...?

[tnixon]

Hmm - looks like these issues are mostly based on how the build is configured in setup.py - it's not currently including sub-modules! I believe I have a fix. Nevertheless, we should probably run test suite against build artifacts (not just source).