Added ZWJ/ZWNJ; eyelash-RA proposal

- Added ZWJ (U+200D) and ZWNJ (U+200C)
- Added Eyelash-RA (aka Pareli-RA) combination [U+0931 + U+094D]
  to [CapsLock + ~]. See Unicode specification 5.0, Chapter 9.1, Rule R5.

PS: The second change is proposal only.