doc: brainstorming
ef-mode.el: typo in keyword: its 'continue', not 'Continue'
grammar: more general syntax for list expr arg list open/close delimiter
doc: modules, object properties, memory management, evaluation order
doc/grammar: renaming of expression related terms
ef-mode.el: syntax-table: made _ symbol
doc: var/val is for single data obj, vars/vals multiple data objs
doc: on "variable sized raw arrays" and "composable language"
doc: on "variable sized raw arrays" and "composable language" and "primitive types"
doc: # as prefix for names denoting ctconst'ness
doc: Moved small fragments to a new chapter "built-in types"
doc: added ideas for an enumeration type
doc: chapter "Guidelines in designing EF": reorderings and a few new ideas
grammar: single line comments now start with // or #!, multiline are /* ... */

- #! starts a single line comment
- // starts a single line comment
- /* ... */ is a multi line comment. Technically not yet nestable, but the intention is that they are nestable.
grammar: end delimiter for lists is now $ instead ;
grammar: now uses ; instead , to separate standalone expr
test: Made test output more comprehendible

- Added <<< / >>> banner lines
- Different wording
grammar: in lists, replaced references to sub_expr by standalone_expr
Parser returns AST root now by AstValue* instead AstSeq*
grammar: Merged ct_sa_expr_list into ct_list, renamed fragment ct_sa_expr_list to ct_list