FEATURES
- pshell: convert scienta data to true counts
- pre-process: add gauss2_reduction data reduction function
- anglescan: add set_contrast and normalize_strip_phi functions
- explorer: show info about multi-region scans
- documentation: add detailed instructions for angle-scan processing
BUGFIXES
- explorer: fix attributes notebook
- pshell: fix progress bar
- elog: increase the number of accepted attachments
- pshell import: fix units and data scaling.
- pshell import: support new multi-region scans.
- angle scans: add trim function.
- angle scans: update import_tpi_scan function.
- angle scans: fix scales of check waves in normalization.
- area display: new cursor mode for background selection.
- elog: bugfixes (attachment list, check existing logbook).
* bugfixes in pshell import
* updates to elog interface: templates, login, separate persistent and volatile data
* new header and revision information in documentation
