Build #854 (Oct 10, 2019, 12:58:04 PM)

	Build Artifacts
	Changes Introduce ObservableSlot as part of VariableLibrary. (details / githubweb)
	Push event to branch Pharo8.0 at 12:57:58 PM on Oct 10, 2019
	Revision: e0a1778f7b64ab025739fff6563707a3b6105e4e Repository: https://github.com/pharo-project/pharo.git Pharo8.0
	Test Result (no failures)