What's Changed

• respect RUSTC_WRAPPER env var by @hkBst in #46
• bump version number: v0.4.1 by @RalfJung in #48
• Prepare 0.4.1 by @djc in #49

• Switch to semver 1.0 (#39, thanks to @dtolnay)

• Remove requirement that minor LLVM version is always 0
• Allow (but ignore) micro part of LLVM version (fixes #37)

• Make parser more robust to input variations (fixes #11)

• Parse LLVM version (#31, thanks to @programmerjake)
• Improve error output for command errors (fixes #33)