v0.59.2

 * cexpr+env_logger bump.
 * Various fixes for C++ crashes / hangs.
 * Enums now respect annotations and derives properly in more cases.
 * Some more APIs (blocklist-file, etc).
 * 'static lifetime is elided when appropriate.

v0.47.4

Backported BINDGEN_EXTRA_CLANG_ARGS support.