v3.7.3

What's Changed

• use pathlib for concatenating paths by @trondth in #161
• Bugfix concat path by @trondth in #163
• Bugfix concat path by @trondth in #164
• use path from page in file_api_url, when page is not empty by @trondth in #165

Full Changelog: v3.6.3...v3.7.3