yaml 2.1.0

YAML-1.1 parser and emitter

Support for YAML 1.1 (YAML Ain't Markup Language) serialization using the
LibYAML library.

License: MIT


New Features:
- Basic PHP8 (master branch) compatiblity
Bugs Fixed:
- #79494: The 64-bit YAML ext uses 32-bit signed integer arithmetics (cmb69)
- Use ZEND_LONG_FMT to fix -Wformat warnings (carusogabriel)
- Fix memory leaks when writing timestamps (cmb69)
- Update tests/yaml_parse_file_002.phpt for PHP8 (carusogabriel)
- #78353: Remove deprecated TSRM macros (a.dankovtsev)