just 1.56.0

Fixed

• Omit authorization header in install script if GITHUB_TOKEN is empty (#3595 by casey)
• Evaluate assignments in dependency order (#3591 by casey)
• Do not run shell() commands during dry run (#3588 by casey)
• List aliases for recipes in other modules (#3581 by casey)
• Don't unindent format strings twice (#3579 by casey)
• Include doc comments and attributes in --show (#3578 by casey)
• Don't resolve submodule variables to parent module variables (#3577 by casey)
• Show dependency paths (#3576 by casey)
• Reject shell-expanded string identifier in format string interpolation (#3575 by casey)
• Resolve variables in [cache] expressions (#3573 by casey)
• Preserve blank CRLF lines between recipes (#3568 by casey)
• Report mixed leading whitespace in recipe bodies (#3567 by casey)
• Preserve eager keyword in --dump and --fmt (#3565 by casey)
• Export [env] variables to recipe bodies (#3566 by casey)
• Don't add trailing space to empty doc comments (#3564 by casey)
• Preserve CRLF when unindenting blank lines (#3563 by casey)
• Include parameter multiple in dump (#3562 by casey)
• Skip private variables when calculating --evaluate padding (#3561 by casey)
• Don't show flag placeholders in --usage (#3559 by casey)
• Fix is_dependency() in [confirm] expressions (#3558 by casey)
• Skip private modules when choosing (#3557 by casey)
• Don't re-evaluate assignments in user-defined functions (#3555 by casey)
• Forbid format-string backticks (#3554 by casey)
• Don't use shebangs as doc comments (#3553 by casey)
• Don't deduplicate ASTs (#3552 by casey)
• Allow escaping CRLF in strings (#3550 by casey)
• Ignore sigils on continuation lines (#3549 by casey)
• Catch circular references though function calls (#3548 by casey)
• Resolve references in module [doc] attributes (#3547 by casey)
• Avoid exponential blowup when traversing dependencies (#3546 by casey)
• Handle invalid shebang lines (#3545 by casey)
• Fix variable shadowing (#3543 by casey)
• Handle timestamp formatting errors (#3542 by casey)
• Display correct mismatched delimiter in format string (#3540 by casey)
• Handle unterminated format string (#3539 by casey)
• Error on end-of-file after backslash (#3538 by casey)

Changed

• Make path_exists('') return false (#3570 by casey)
• Make set ignore-comments only apply to shell recipes (#3544 by casey)
• Remove !include error (#3541 by casey)
• Allow [doc] to be const expression (#3516 by casey)
• Allow conditional attributes on all items (#3515 by casey)

Added

• Resolve module aliases in --show, --list, and --usage (#3580 by casey)
• Add num_jobs() function (#3537 by casey)
• Add --jobs option to limit parallelism (#3531 by casey)
• Add indentation setting (#3530 by casey)
• Add [arg(min)] (#3524 by casey)
• Add [arg(max)] (#3522 by casey)

Misc

• Construct ExpressionContext with .into() (#3590 by casey)
• Add Spack package to readme (#3589 by casey)
• Look up variables by number (#3585 by casey)
• Consolidate variable resolution (#3584 by casey)
• Add ListEntry (#3583 by casey)
• Give format string token kinds unique display implementations (#3574 by casey)
• Update [arg(min, max)] description in readme (#3572 by casey)
• Move lexiclean into source tree (#3569 by casey)
• Remove debug assert in Recipe::group_arguments() (#3560 by casey)
• Deprecate set windows-shell (#3536 by casey)
• Move [arg] attribute construction into helper method (#3525 by casey)
• Consolidate attribute display (#3514 by casey)