Resolve "Nexus: NXdata"
Closes #1358 (closed)
Writer: create NXdata as a result of
Bliss refactoring: Make usage of
ScanDisplaynow affects scan saving as well. This also gets ride of circular import issues.
flint_displayed_channels: popped when starting a scan, so Flint falls back to the current selection on the next scan (so called
displayed_channelsbefore, I kept the behaviour)
nexus_displayed_channels: cannot be popped because there is no other fallback like Flint has
So for Flint and the REPL API, nothing has changed. I only made sure the Nexus file saves an NXdata without the need to call explicitly
plotinit before every scan.