Introduce jackknifeMean and jackknifeVariance functions

These have O(n) cost, vs O(n^2) for jackknife.
Bump version to 0.10.6.0
Add release notes
Switch all vector summation over to KBN
Change Estimator into an algebraic data type

This lets us automatically choose more efficient jackknife
implementations if possible.

--HG--
extra : amend_source : 3c0bf2f7db4ee65ccc2154a304776a06794c72e1
Fix haddock error
Add support for more fast jackknife stats
Merge
A big old style cleanup diff

This cleans up a number of small issues that are not consistent
with my normal coding style, mostly relating to import sorting and
whitespace.

--HG--
rename : tests/Tests/NonparametricTest.hs => tests/Tests/NonParametric.hs
rename : tests/Tests/NonparametricTest/Table.hs => tests/Tests/NonParametric/Table.hs
Increase lower bound on math-functions dependency
Bump lower bound on math-functions again
Added tag 0.11.0.0 for changeset d6fc5ae89aaf
Update tests to work with `QuickCheck-2.7`

In `2.7` `Property` is a separate type.
Rename `printTestCase` -> `counterexample`

`printTestCase` is deprecated in `QuickCheck-2.7`
Merge QuickCheck 2.7 support
Bump dependency on QuickCheck