zend-mime 2.5.2

Added

• #8 and #11 port documentation from the zf-documentation repo, and publish it to https://zendframework.github.io/zend-mime/

Deprecated

• Nothing.

Removed

• Nothing.

Fixed

• #2 fixes Mime::encodeBase64()'s behavior when presented with lines of invalid lengths (not multiples of 4).
• #4 modifies Mime::encodeQuotedPrintable() to ensure it never creates a header line consisting of only a dot (concatenation character), a situation that can break parsing by Outlook.
• #7 provides a patch that allows parsing MIME parts that have no headers.
• #9 updates the dependencies to:
  • allow PHP 5.5+ or PHP 7+ versions.
  • allow zend-stdlib 2.7+ or 3.0+ verions.