Impose

- maintenance release

- fix: only edit/display one structure when changing large composites (59)
- enh: improved widget placement in collect and colocalize UI
- enh: always display the last dataset when switching to colocalize in UI
- setup: bump pyqtgraph from 0.12.4 to 0.13.3
- setup: require Python 3.9
- BREAKING: build recipe broken for macOS

- fix: workaround for TypeError when moving ROI with mouse
- ci: update badge and codecov

- fix: exception in Collect/Colocalize tab when using the sliders
in the visualization panel (51)

- fix: bump bmlab from 0.2.3 to 0.6.1 (file format changes) (53)

- fix: bump bmlab from 0.1.10 to 0.2.3 (file format changes) (49)