Improvements:
- PR #171 Expose expat library version at runtime via expat_version()
and expat_version_info() class methods on XML::Parser::Expat
- PR #169 GH #168 Expose Expat 2.7.2 AllocTracker security APIs
(AllocTrackerMaximumAmplification, AllocTrackerActivationThreshold)
Maintenance:
- PR #170 Clean up build configuration: remove dead CAPI code from
Makefile.PL and Expat/Makefile.PL, add test dependencies to cpanfile