tagging version 1.16.0

Tagging version 1.15.0

Tagging version 1.14.0

Update spectrum class name from Spectrum1D to Spectrum (#1126)

* Rename Spectrum1D to Spectrum

* Update name in analysis

* Update name in fitting and manipulation

* Update name in tests

* Update name in io

* Update name in io tests

* Add changelog entry

* Update class name in docs

* Update schema ref in spectrum_list asdf

* Replace instances of 'spectrum1d'

* Properly (I think) version change to asdf schema

* Add PR number to changelog entry

* Remove unused import

* Fix doc example output

* Fix failing remote data test

* Update url to MANGA data for tests

* Fix RSS filename

Tagging version 1.13.0

Tagging version 1.12.0

Tagging version 1.11.0

Tagging version 1.10.0

Tagging version 1.9.1

Tagging version 1.9.0