added charsets for [vVhHR]

I was getting some errors when running the tests so I added a few additional charsets as defined in the Java Doc:
http://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html

These additions eliminated the errors for me.  I'm not entirely sure about all the unicode chars, but I think they're correct.
The `"\u000D\u000A"` bit here is outside of how I envisioned this namespace working, since wrt unicode it's two separate characters.

I assume it's here because `#"\R"` will match `"\r\n"`, which would be the only violation I know of of the "rule" that these classes only match single characters.

The only other approach I can think of is special-casing `\R` at a higher level and transforming it to something equivalent to #"\r\n|[\u000A-\u000D\u0085\u2028\u2029]", though that only works if `\R` never appears in a character class. I don't have a Java 8 repl on hand so I don't know if `#"[\R]"` is legal (I hope it isn't) and what the edge cases would mean.