• Run shellcheck command for scripts at run: in parallel. Since executing an external process is heavy and running shellcheck was bottleneck of actionlint, this brought better performance. In my environment, it was more than 3x faster than before.
• Sort errors by their positions in the source file.

• download-actionlint.yaml now sets executable output when it is run in GitHub Actions environment. Please see instruction in 'Install' document for the usage.
• Redundant type ArrayDerefType was removed. Instead, Deref field is now provided in ArrayType.
• Fix crash on broken YAML input.
• actionlint -version returns correct version string even if the actionlint command was installed via go install.

• Ignore SC1091 and SC2194 on running shellcheck. These are reported as false positives due to sanitization of ${{ ... }}. See the check doc to know the sanitization.
• actionlint replaces ${{ }} in run: scripts before passing them to shellcheck. v1.0.0 replaced ${{ }} with whitespaces, but it caused syntax errors in some scripts (e.g. if ${{ ... }}; then ...). Instead, v1.1.0 replaces ${{ }} with underscores. For example, ${{ matrix.os }} is replaced with ________________.
• Add download-actionlint.bash script to download pre-built binaries easily on CI services. See installation document for the usage.
• Better error message on lexing " in ${{ }} expression since double quote is usually misused for string delimiters
• -ignore option can now be specified multiple times.
• Fix github.repositoryUrl was not correctly resolved in ${{ }} expression
• Reports an error when if: condition does not use ${{ }} but the expression contains any operators. The official document prohibits this explicitly to avoid conflicts with YAML syntax.
• Clarify that the version of this repository is for actionlint CLI tool, not for library. It means that the APIs may have breaking changes on minor or patch version bumps.
• Add more tests and refactor some code. Enumerating quoted items in error message is now done more efficiently and in deterministic order.

First release 🎉

See documentation for more details:

• Installation
• Usage
• Checks done by actionlint