FEAT: multi-line strings and comments now handled by the lexer.
FEAT: multi-line strings support added to runtime lexer (LOAD).
FIX: regression on LOADing empty strings.
FEAT: add char! support to the runtime lexer (LOAD).
FIX: bad handling of escaped characters in strings in runtime lexer (LOAD).
FIX: MOLD on string rewritten to correctly output curly braces delimiters when required.

Note: special characters escaping implementation both for string! and char! values is pending.
FIX: string with offset not handled correctly by MOLD action.
FIX: string/rs-head fixed for the same bug, should now return accurate position on strings with offset.
FEAT: added preliminary support for file! datatype.

Includes:
- datatype definition with all actions implemented (at least the same as string!)
- lexer support
- runtime lexer support
- interpreter support

Pending:
- compiler support
FEAT: added file! support to the compiler.
FIX: minor code improvements (more consistent way to construct paths).
FIX: an empty string with braces {} passed to the runtime lexer was producing an invalid string error.
FIX: bad handling of escaped quotes in preprocessor was causing source corruptions in rare cases.
FIX: missing escaped string delimiters decoding in lexer.
FEAT: now MOLD on string! correctly escape special characters.
FEAT: now MOLD on char! correctly escape special characters.
TESTS: added first LOAD tests (string delimiters only for now).
FEAT: now the interpreter will return an error message on unset words without halting.
FEAT: same thing for unset words in paths, but the interpreter will crash after that due to incorrect value on stack.
TESTS: removed non-ascii tests from regression-tests.r and added skeletal mold-test.red
FEAT: added /all option to LOAD native. Now LOAD will unbox the result if it's a single value (breaks compatibility with older behavior).
FEAT: DO native is now able to process any type, including strings.
FEAT: console code upgraded according to LOAD behavior change.
Merge branch 'master' of github.com:dockimbel/Red
TESTS: merged mold-test.red tests into serializarion-test.red