#TODO add downstream handling of contact sites with tuple identifier

update acknowledgements; refactor `syn_sign_ratio_celltype` to allow caching of results; update cmn with multi-views

* improve memory requirements and performance in kimimaro skeletonization step

added `syn_ssv` attribute to SuperSegmentationObjects, `init_sso_from_kzip` is now aware of `syn_ssv`, pkl files are now loaded with disabled gc, updated docs

added sem. segm. example for compartment prediction (examples/semseg_axon.py), fixed order mis-match between ssd.ssv_ids and arrays loaded from ssd.load_cached_data(..), updated docs

fixed type error in calc_rot_matrices, specified openmesh version (now correctly), adjusted number of sample locations

Added additional link to latest readthedocs build

added readthedocs batch