Truncate SkyCoord exception if too long #74

Job	Run time
tests / Load tox environments	8s
publish / Build source and wheel distribution	5m 25s
tests / codestyle (ubuntu-latest)	59s
tests / py38-test (ubuntu-latest)	3m 52s
tests / py39-test (ubuntu-latest)	3m 55s
tests / py310-test (ubuntu-latest)	3m 32s
tests / py311-test (ubuntu-latest)	3m 22s
tests / py38-test (macos-latest)	9m 54s
tests / py39-test (macos-latest)	4m 39s
tests / py310-test (macos-latest)	6m 8s
tests / py311-test (macos-latest)	3m 24s
tests / py38-test (windows-latest)	5m 54s
tests / py39-test (windows-latest)	5m 51s
tests / py310-test (windows-latest)	5m 55s
tests / py311-test (windows-latest)	6m 59s
	1h 9m 57s

Provide feedback