Most relevant commits:
- compiler: initialize the named function return parameters
- cmd/scriggo: add builtins 'splitAfter' and 'splitAfterN' to serve
- template/builtin: add builtins to operate on time values
- templates/builtin: add 'marshalJSON' and 'marshalJSONIndent' functions
- compiler/lexer: parse URLs in Markdown context
- compiler/parser: fix error returned if a rendered partial does not exist
- all: implement function finalizer