Merge pull request #1 from glassdb/master

Sync with main repository (version 1.4 on http://mc.stfx.eu/Neo)
resync with upstream stable v16
sync with v1.6
sync with upstream, #stable v17
Merge commit 'b8d6fde427f79534d59bb898eb39779609f26d77'

* commit 'b8d6fde427f79534d59bb898eb39779609f26d77':
  sync with upstream, #stable v17
  resync with upstream stable v16

Conflicts:
	repository/ZTimestamp.package/ZTimestampFormat.class/class/abbreviatedTimeZones.st
	repository/ZTimestamp.package/ZTimestampFormat.class/methodProperties.json
	repository/ZTimestamp.package/monticello.meta/version
Update README.md
Merge branch 'master' into gemstone

* master:
  Update README.md
  sync with upstream, #stable v17
  sync with v1.6
  resync with upstream stable v16

Conflicts:
	repository/ZTimestamp.package/DateAndTime.extension/instance/asZTimestamp.st
	repository/ZTimestamp.package/DateAndTime.extension/methodProperties.json
	repository/ZTimestamp.package/ZTimestampFormat.class/instance/format.timeZoneOn..st
	repository/ZTimestamp.package/ZTimestampFormatTests.class/methodProperties.json
	repository/ZTimestamp.package/ZTimestampTests.class/instance/testConversions.st
	repository/ZTimestamp.package/ZTimestampTests.class/methodProperties.json