• Fix command pack issue: if using --src in the option --xoptions, pyarmor raises excpetion no entry script found
• Change core version and spp library version to r50.4
• Support sppmode for Python3.7~3.10 in platforms: darwin.aarch64, linux.aarch64
• Support sppmode for Python 3.10 in platforms: windows.x86_64, linux.x86_64, darwin.x86_64, darwin.aarch64, linux.aarch64
• Fix sppmode bug: the result of inplace op for attribute is not right. For example, after self.a += 1, self.a isn't increased in old version.
• Fix sppmode bug: AnnAssign is ignored. For example, after x: int = 3, x still is undefined in old version.