- Added missing pagination or page parameters in `/projects/{id}/tasks`,
`/tasks/{id}/jobs`, `/jobs/{id}/issues`, `/jobs/{id}/commits`,
`/issues/{id}/comments`, `/organizations`
- Updated SDK, tests and UI

Improved image preview loading for **Tasks**, **Jobs** and **Projects**
views
Backend behaviour change: creating image previews by request and storing
them in the cache
Added corresponding endpoints:
tasks/{id}/preview
projects/{id}/preview
jobs/{id}/preview

Demonstration(added random 0-1s delay for demo purposes):
https://user-images.githubusercontent.com/41117609/208106321-951b8647-6e6b-452e-910c-31c4d0b8682d.mp4
https://user-images.githubusercontent.com/41117609/208106339-2d3a5a7b-d422-4b27-9e76-08729022e1ca.mp4

For user-facing functions, keep accepting `str` paths to maintain
compatibility and flexibility, but add support for arbitrary path-like
objects. For internal functions (in `downloading.py` and
`uploading.py`), don't bother and require `pathlib.Path`.

The only code that isn't converted is build-time code (e.g. `setup.py`)
and code that came from openapi-generator.