This release brings major stability and compatibility improvements to Fil-C.

• The Fil-C compiler is now based on clang 20.1.8 (previously was clang 17).
• Fixes to multiple GC stability issues found after months of stress testing.
• Compatibility with code that passes around pointer-integer unions by value in local variables is much improved.
• Compatibility with code that uses memcpy as a polymorphic assignment primitive is much improved.

Additional fixes:

• The compiler binary depends on fewer shared libraries, making it more portable.
• Closing fd 2 no longer causes infinite panic recursion.
• Version scripts now support # comments.
• Building static binaries is now supported.
• Additional syscall support: sendmmsg, recvmmsg, statx, splice, tee, mknod, mknodat, reboot, umount2, epoll_pwait, epoll_pwait2, timer_create, timer_delete, timer_getoverrun, timer_settime, timer_gettime, all of the xattr syscalls
• Increase number of syscalls that can be called via syscall(2).
• Fixes to existing syscall support: futimes now supports NULL time, accept and accept4 now support NULL address, execve now supports NULL envp.
• Add internal support for dlvsym.
• Fix a case of errno being set when it shouldn't be.
• Support calling setjmp in a loop and then longjmping to any of the jmp_buf's created by that loop.
• Fix compiler crash compiling code that has redundant checks and unstructured control flow.
• Support dumping panic logs to /var/filc/panics (if the directory exists and the process has permission to create files there).
• Revert changes to libcxx that were only necessary for MonoCaps (Fil-C's previous, and less compatible, capability model).