lint-staged

Added a new option --fail-on-changes to make lint-staged exit with code 1 when tasks modify any files, making the precommit hook fail. This is similar to the git diff --exit-code option. Using this flag also implies the --no-revert flag which means any changes made by tasks will be left in the working tree after failing, so that they can be manually staged and the commit tried again.

Added a new option --continue-on-error so that lint-staged will run all tasks to completion even if some of them fail. By default, lint-staded will exit early on the first failure.

Internal lint-staged errors are now thrown and visible in the console output. Previously they were caught with the process exit code set to 1, but not logged. This happens when, for example, there's a syntax error in the lint-staged configuration file.

Added a new option --hide-unstaged so that lint-staged will hide all unstaged changes to tracked files before running tasks. The changes will be applied back after running the tasks. Note that the combination of flags --hide-unstaged --no-hide-partially-staged isn't meaningful and behaves the same as just --hide-unstaged.