RFC-2822, RFC-2045 and RFC-2049 compliant raw email message generator.
node16 type resolution fix
corrected some typings
switched to tsup to create prod assets
extended typings support
updated tests updated docs
fixed type import issues (3)
fixed type import issues (2)
fixed type import issues dependencies updated
use Buffer.from() as Buffer() is now deprecated since Node 8 dependencies updated
fixed message and attachment filtering when outputing a message updated dependencies added a contribution guideline