v2.2.1

• Update @actions/cache dependency to fix usage of zstd compression.

v2.2.0

• Add new save-if option to always restore, but only conditionally save the cache.

v2.1.0

• Only hash Cargo.{lock,toml} files in the configured workspace directories.

v2.0.2

• Avoid calling cargo metadata on pre-cleanup.
• Added prefix-key, cache-directories and cache-targets options.

v2.0.1

• Primarily just updating dependencies to fix GitHub deprecation notices.

v2.0.0

• The action code was refactored to allow for caching multiple workspaces and
  different target directory layouts.
• The working-directory and target-dir input options were replaced by a
  single workspaces option that has the form of $workspace -> $target.
• Support for considering env-vars as part of the cache key.
• The sharedKey input option was renamed to shared-key for consistency.

v1.4.0

• Clean both debug and release target directories.

v1.3.0

• Use Rust toolchain file as additional cache key.
• Allow for a configurable target-dir.

v1.2.0

• Cache ~/.cargo/bin.
• Support for custom $CARGO_HOME.
• Add a cache-hit output.
• Add a new sharedKey option that overrides the automatic job-name based key.

v1.1.0

• Add a new working-directory input.
• Support caching git dependencies.
• Lots of other improvements.