Merge pull request #2211 from Epitrochoid/add-support-trail-Z

Added support for trailing Z in UTC time
Add changelog entry for #2211

[ci skip]
Merge pull request #1628 from mhvk/units-dex-dB

Add dex, dB units
Forgotten CHANGES.rst entry for #1628
Merge pull request #2231 from mhvk/units-dex-dB-CHANGES

Forgotten CHANGES.rst entry for #1628
Merge pull request #2208 from mdboom/test/dont-fail-if-docs-missing

Don't fail -P if docs missing
Discourage merging from master, formatting change
Change case of section title
Branch off of right thing.  Also PEP8ify test code.
Add flat prior option to binom_conf_interval.  Fix bugs with scalars.

* Add flat prior option to binom_conf_interval and binned_binom_proportion
* Fix bug where jeffreys prior crashed when given scalar values of k.
* Added unit test for flat prior and for scalar jeffreys prior.
* Update docs and put in 0.4 changelog
Fix typo (fucntion)
Comments from @kbarbary

* Fix docs
* Try to return input shape more faithfully.  Add some unit tests
  of that behavior.
Change the way shapes are handled in binom_conf_interval

* Rather than explicitly reshape the output, treat scalars
  as a special case and let the ufuncs deal with broadcasting.
  Doesn't seem to change any aspect of the output.
Merge pull request #2223 from mdboom/setup/make-install-without-build-work

python module not installed
Merge pull request #2229 from aconley/coverage_cosmo

Add additional unit tests for cosmology package
Removed parameters section for `NonLinearLSQFitter`

this appears to be an artifact from when `NonLinearLSQFitter`  took a
model in its initializer
Adjusted attribute documentation for `NonLinearLSQFitter` to not kill sphinx
Added documentation for `NonLinearLSQFitter.errorfunc`
Add default config values to FakeApp allowing tests to run without crashing on missing config attributes.
Update test to reflect new expected reults since the changes in 5da52803d2d9dd3a5c2663353899bd04655ab53a