Shen OS Kernel 21.0

Added

• Moved code that prints errors at the toplevel to the shen.toplevel-display-exception function that can be overrided by ports to customize printing of errors (to for example, include error location).

Removed

• command-line function and *argv* variable.
• fold-right and fold-left.
• get/or, value/or, <-address/or, <-vector/or and <-dict/or.
• filter.
• exit.
• Handling of EOF in the REPL.

Changed

• for-each was made internal to the shen package.
• dict, dict?, dict-count, dict->, <-dict, dict-rm, dict-fold, dict-keys and dict-values made internal to the shen package.

Fixed

• Remove repetition from code generated by defcc which made some cases very slow to compile and run.
• Fixed the expansion of non-null packages generated by macros.
• Increased space allocated for prolog, fixes issues in bigger programs.
• Made , external.
• Fixes nth for cases where the element is not on the list or invalid arguments are passed.