0.2.51

This is a minor quality-of-life release.

Bug Fixes

• The IPC server now correctly deletes its UNIX socket after cleanup.
• The IPC server no longer blocks the cleanup process if a worker's socket has been closed by entering a non-blocking state.

Performance Improvements / Refactoring

• std/base64 has been replaced by simdutf. This should, in theory, give us major speedups.
• All the syntactical sugar code has been moved to a separate package called shakar for uniformity.
• Ferus now compiles with Mimalloc as the default memory allocator.