- Add keyring
- Fix source URLs to point to actual releases

- Update to version 3.1
- The mxmlLoad* functions now print an error when the XML does
not start with < and no parent node is supplied (Issue #256,
Issue #259)
- Fixed an issue with “make install” trying to install old files
(Issue #257)
- Fixed some DSO installation issues on Linux.
- Changes from 3.0
- Changed the license to Apache 2.0 with exceptions (Issue #239)
- All of the internal node structures are now moved out of the
public header (Issue #240)
- Fixed a potential buffer overflow when writing floating point
data (Issue #233)
- Moved mxmldoc to a new codedoc project whose focus is on
generating code documentation (Issue #235, Issue #236, Issue
#237)
- Error messages now include the line number of the error (Issue
#230)
- The mxmlSetCDATA, mxmlSetElement, mxmlSetOpaque,
mxmlSetOpaquef, mxmlSetText, and mxmlSetTextf functions caused
a use-after-free bug if the value came from the same node
(Issue #241)
- The mxmlSetOpaquef and mxmlSetTextf functions did not work
(Issue #244)
- The _mxml_strdupf function did not work on Windows (Issue #245)
- Changes from 2.12
- Added yet more documentation about using MXML_OPAQUE_CALLBACK