Fixed

• Don't leak signal handler pipe into child processes (#3035 by rjmac)

Added

• Allow long to default to to parameter name (#3041 by casey)
• Allow const expressions in all settings (#3037 by casey)
• Allow const expressions in working-directory (#3033 by casey)
• Add --usage subcommand and argument help strings (#3031 by casey)
• Add flags without values (#3029 by casey)
• Allow passing arguments as short -x options (#3028 by casey)
• Allow recipes to take --long options (#3026 by casey)

Misc

• Add original token to string literal (#3042 by casey)
• Remove string literal lifetime (#3036 by casey)
• Move overrides into config (#3032 by casey)
• Test that options are passed as positional arguments (#3030 by casey)
• Group arguments by parameter (#3025 by casey)
• Add OpenBSD package to readme ( by )