Girder-large-image

Changes
- Some log levels have been adjusted ([689](../../pull/689), [695](../../pull/695))

Improvements
- Add the image converter to the extra requires ([677](../../pull/677))
- All file tile sources can take either strings or pathlib.Path values ([683](../../pull/683))
- On Girder with read-only assetstores, return results even if caching fails ([684](../../pull/684))
- Handle geospatial files with no explicit projection ([686](../../pull/686))

Bug Fixes
- Fix default properties on annotations when emitted as centroids ([687](../../pull/687))

Bug Fixes
- A change in the Glymur library affected how missing files were handled ([675](../../pull/675))

Improvements
- Better Girder client exports ([674](../../pull/674))

Improvements
- Improve warnings on inefficient tiff files ([668](../../pull/668))
- Add more options to setFrameQuad ([669](../../pull/669), [670](../../pull/670))
- Improved concurrency of opening multiple distinct tile sources ([671](../../pull/671))

Improvements
- Better handle item changes with tile caching ([666](../../pull/666))