v0.21.0

Added

• add java.io.ObjectInputStream and java.io.ObjectOutputStream intrinsics
• add intrinsic support for basic file io
• add java/lang/ref/PhantomReference intrinsics
• add OS specific file intrinsics
• implemented java.io.ObjectStreamClass.hasStaticInitializer(Ljava/lang/Class;)Z

Fixed

• correct mutf-8 class file string encoding/decoding as well as add utf-16 Java 9+ string support
• add invokedynamic bootstrap method descriptor verification

Other

• [breaking] change VM parameter types from Vec to &[T] for zero-allocation and improved ergonomics
• optimize Reference enum memory
• [breaking] update ConstantPool try_get_utf8, try_get_class, try_get_string, try_get_module, and try_get_package to return &str instead of &String. Updated Class to use the same class name reference from constant pool instead of copying the string into the struct.
• create compile time intrinsic method registry
• add classfile attributes documentation
• update rust doc formatting
• add constants for java versions
• optimize file reads by removing iterative type conversion from u8->i8. Optimized Reference Vec signed<->unsigned type conversions.
• add java.lang.invoke.DirectMethodHandle$Holder trampoline methods on class definition
• remove unnecessary version file parsing on startup when the full java version is specified
• remove unnecessary call to obtain current directory on initialization
• update to phf=0.12.1
• remove lint warning on windows
• remove unnecessary java version from intrinsics registry
• correct clippy lints