v3.28.0

• Added the ability to loop over commands and tasks using for (#82, #1220 by @pd93).
• Fixed variable propagation in multi-level includes (#778, #996, #1256 by @hudclark).
• Fixed a bug where the --exit-code code flag was not returning the correct exit code when calling commands indirectly (#1266, #1270 by @pd93).
• Fixed a nil panic when a dependency was commented out or left empty (#1263 by @neomantra).