actions 0.1.3

• fix: make sure get_latest_release_hash() and get_current_hash() strip newlines in hash strings. (@kelly-sovacool)
  • this bug caused a malformed command string in is_ancestor(), which caused mkdocs-mike to fail.
• set update-sliding-branch to false by default in post-release action. (#18, @kelly-sovacool)
• fix bug that prevented mkdocs-mike from working on repos with no release. (#20, @kelly-sovacool)
• fix: resolve symlinks when writing files. (#23, #24, @kelly-sovacool)