v0.8.4

Fixes:

• 🐛 get_attachments_on_projects: Overwrite attachment file by default
• 🐛 json_field_builder: check if sprint_custom_id is None
• 🐛 path_builder: handle multi-dir base_dir
• 🐛 download_attachments: avoid conflicts/overwrites by isolating attachments (helps with #112)

Improvements:

• ✨ download_attachments: make defaults and behaviour match get_attachments_on_projects

Features:

• ✨ download_attachments: support create_html_directors option (resolves #112)
• ✨ download_attachments: support overwrite=False option (to speed up incremental backups)

Thanks to @huyz for the above fixes and improvements to v0.8.4