- Detect X-WS-* headers (e.g., X-WS-Attachment-UUID) as MIME headers
to ensure attachment headers like Content-Type and Content-Disposition
get normalized properly
- Add test case for attachment header normalization
- Bump version to 0.5.0
The normalization fixes malformed continuation lines in attachment
headers generated by Infomaniak webmail, where lines like
"name=file.pdf" are missing the required leading whitespace.
herel
