synchronize CLI and API defaults for get_expected_cis smoothing & aggregation

[gfudenberg]

cooltools/cooltools/cli/expected_cis.py

Line 46 in ba2be42

@click.option(

issue: currently API returns smoothed & aggregated by default, but CLI does not.
proposal: CLI should smooth and aggregate across regions by default.

After addressing this issue, a release should follow, since this may change default pipeline outputs.

Notes:

• is smooth_sigma=0.1 a reasonable default? @golobor has a favorite of 0.03.