update changelog for 1.1.0 #348

Job	Run time
gwcs unit tests	55s
jwst unit tests	23m 42s
roman_datamodels unit tests	1m 17s
specutils unit tests	1m 22s
weldx unit tests	2m 22s
sunpy unit tests	1m 51s
dkist unit tests	2m 21s
asdf-astropy unit tests	2m 16s
asdf unit tests	1m 2s
asdf-transform-schemas unit tests	1m 5s
asdf-wcs-schemas unit tests	54s
asdf-coordinates-schemas unit tests	1m 22s
	40m 29s

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