v2.33

• delete output file before run to ensure preload failure detection works
• display unknown symbols as ???
• fix false double-free warnings for zero-size allocations
• update log format to include heapusage version
• add macOS code re-sign support to add debugging entitlements
• add new meta-tool error (default) which enables double-free, overflow and use-after-free
• improved stability by using thread-local bypass flag
• add macOS debugger breakpoint for malloc_error_break
• deduplicate repeated errors from same call site and add warning summary
• add configurable quarantine limit and eviction warning
• improve performance by using thread-local recursion guard
• simplify output format making pid prefix optional
• improve performance by using unordered map and fix some free bookkeeping
• improved handling of fork()
• add support for gdb debugger