Merge branch 'legacy-to-string' into 'develop'

Fix #880 #881 AbsoluteDate toString with and without UTC offset

Closes #880 and #881

See merge request !227
5 jobs for develop in 23 minutes and 1 second (queued for 7 seconds)
Status Name Job ID Coverage
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passed coverage-import #3500

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97.0%
 
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passed deploy:artifacts #3501

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passed deploy:site #3502

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passed performance