Pyjibe

- ref: don't use deprecated matplotlib.cm.get_cmap
- ref: use packaging.version.parse to compare versions
- ref: fix matplotlib deprecation warning for set_data
- tests: don't be so strict

- setup: bump afmformats from 0.16.4 to 0.16.7
- setup: bump nanite from 3.5.0 to 3.5.2
- setup: require Python 3.9
- ci: update build pipelines
- tests: loosen allclose call

- fix: model parameters defined via expressions were not exported
- fix: only export hidden parameters in developer mode
- enh: export ancillary parameters in autosave

- fix: make sure fit parameters are identified by their label
instead of by an index (which can be wrong, now that we have
hidden parameters)
- fix: do not show "sneddon_spher" model in expert mode

- feat: allow to specify the geometrical correction factor for
non-single-contact experiments (16)
- fix: export fitting method and method kwargs with initial
parameters
- enh: add expert mode which is just a parital developer mode (22)
- enh: add links to docs in two places (19)
- enh: show "Axes" in fitting tab only in developer mode (21)
- setup: bump nanite from 3.4.0 to 3.5.0 (16)

- build: fixed testing pipeline