Updated the documentation for NumString, XPrioString, and String methods in the Importance type to provide clearer descriptions of their behavior and return values. Enhanced comments for better readability and maintainability of the code.
Updated comments in `header.go` and `msg.go` to provide more detailed explanations and references to RFC 5322. This improves clarity on how headers are set and utilized, and the conditions under which they operate.
Updated type declarations for headers and importance to clarify their roles in the Msg package. Added detailed inline comments and RFC links for better documentation and understanding. Enhanced string representation methods to explicitly handle importance levels and header types.
A new "X-Auto-Response-Suppress" header has been added. The SetBulk method has been updated to include this new header, as it is recommended for automated emails. This functionality is tested in the msg_test.go file.
Added "References" header field to cover more potential use cases and enhance versatility. This field will allow applications to track series of related messages.
Test for "References" field has also been added for validation.
Also included are string methods for Content-type objects with relevant tests, ensuring accurate string conversion. Unnecessary duplicate method of string conversion for Charset has been removed to streamline the code and improve readability.
# SUMMARY
* Bad licenses:
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* Unused licenses:
* Used licenses: CC0-1.0, MIT
* Read errors: 0
* Files with copyright information: 45 / 45
* Files with license information: 45 / 45
Congratulations! Your project is compliant with version 3.0 of the REUSE Specification :-)
- Added `EnvelopeFrom()` and `EnvelopeFromFormat()` methods analogous to the `From()` `FromFormat()` methods
- Changed MsgWriter logic for envelope from addresses
- Adjusted `Msg.GetSender()` to return the envelope from first and only mail body from if the envelope is not set