[+] Added base value transformers for unicode strings.
Meh. Added wrong files...

Signed-off-by: Jesse Klugmann <jesse@fd-imaging.com>
[*] Fixed string_value_transformer/value_string_transformer

Signed-off-by: Jesse Klugmann <jesse@fd-imaging.com>
[+] Implemented document-level parsing.

Note: This commit contains the wrong changes...

Signed-off-by: Jesse Klugmann <jesse@fd-imaging.com>