Strip namespace qualifiers from indent candidate

Simpler and less work for the regex engine later.
Change quote style, remove comment
Extract implicit fuzzy indent blacklist patterns

Meikel started the fuzzy indent feature as a simple match against def.*,
let.*, and with.*. Then he added exceptions for syms ending in -fn, and
then a special case match for 'with-meta'.

After this, the fuzzy indent patterns were made a public option, but the
hardcoded exceptions remained. This commit finishes this refactoring and
gives full control to the user.

The new blacklist, and the former pattern whitelist are now lists by
default to allow for any kind of pattern (e.g. '\V\cFOO'), instead of an
implicitly anchored one that cannot be preceded by pattern modifiers.

The old string options are supported for backwards compatibility.

Addresses #7
Add doc for new blacklist and patterns variables
Merge branch 'indent-blacklist'

Closes #7, reported by meh <http://meh.schizofreni.co/>

* indent-blacklist:
  Add doc for new blacklist and patterns variables
  Extract implicit fuzzy indent blacklist patterns
  Change quote style, remove comment
  Strip namespace qualifiers from indent candidate