This release adds support for Valgrind 3.26+.

What's Changed

• support Valgrind 3.26+ (with new XML protocol version 6)
• forward the numeric exit code to the caller instead of always exiting with 200 on errors
• support projects with panic=abort as well as other signals (e.g. SIGINT)
• Add suppression for recent nightly by @purplesyringa in #137
• document some common cases of leaked memory issues in Rust

Full Changelog: 2.3.3...2.4.0