Added * New API call: `PATCH /machine-config/`, used to update VM configuration, before the microVM boots. * Added an experimental swagger definition that includes the specification for the vsock API call. * Added a signal handler for `SIGBUS` and `SIGSEGV` that immediately terminates the process upon intercepting the signal. * Added documentation for signal handling utilities. * Added [alpha] aarch64 support. * Added metrics for successful read and write operations of MMDS, Net and Block devices. Changed * `vcpu_count`, `mem_size_mib` and `ht_enabled` have been changed to be mandatory for `PUT` requests on `/machine-config/`. * Disallow invalid seccomp levels by exiting with error. Fixed * Incorrect handling of bind mounts within the jailed rootfs. * Corrected the guide for `Alpine` guest setup.