feats

Release summary

v2.1.0 moves Mutant forward in four major ways:

1. The language now supports more application-level constructs such as structs,
   enums, loops, float literals, and field access.
2. The standard library/runtime now includes broader builtins for filesystem,
   HTTP, networking, DB access, command execution, and Lua-driven workflows.
3. The security model is materially stronger, with anti-debugging, sandbox
   detection, anti-tamper probing, secure memory primitives, and upgraded
   crypto/signing paths.
4. The build and packaging story is simpler for maintainers because release
   generation now has Go-only scripts for Windows and Unix-like environments.

What is new in v2.1.0

Language features

• Struct declarations and struct literals
• Enum declarations
• for loops
• break and continue
• Float support
• Field expressions and related parser/compiler support

Runtime and builtins

• Filesystem builtins
• HTTP builtins
• Networking builtins
• DB builtins
• Command execution builtin
• Lua execution builtin and runtime support
• Security status builtin
• Additional collection and output helpers

Security improvements

• Cross-platform anti-debug support
• Sandbox detection updates
• Anti-tamper probing
• Stronger cryptographic plumbing and signing flow
• Secure memory handling
• Security diagnostics and telemetry support

Tooling and release engineering

• Go-only release build scripts
• Release asset generation support
• Updated build instructions in README

Breaking-change and compatibility notes

• Release generation flow has changed, so maintainers should use the new scripts
• Security behavior is stricter and may surface different runtime outcomes in
  constrained or instrumented environments
• Projects depending on older assumptions about bytecode, packaging, or runtime
  behavior should be retested
• Existing .mu artifacts should be validated against the current toolchain
  before claiming backward compatibility