Partial order implementation.
Corrections to partial order implementation:
- removed optional comparison operators (they are not used in the mathematical literature, and it is not necessary to burden Spire with additional operators),
- renomed doubleCompare to partialCompare,
- added laws for PartialOrder and Order.
Interval partial order.
Added test case for Eq type class.
Add Marsaglias Ziggurat algorithm
Update AUTHORS.md
Merge pull request #265 from denisrosset/topic/interval-eq-bug

Added test case for Eq type class.
Fix typo in Makoto Matsumotos name
Fix Eq[Interval[A]] implementation.

This fixes the test breakage that occured after a previous PR.
Import math functions from scala.math instead of java.lang.Math
Merge commit 'a18c5916341c2a5a7f9b1ad373566f44d16bd00b'
Move code for MATLAB generator from Ziggurat to example/ZigguratGenerator
Merge pull request #266 from dusank/topic/Ziggurat

Add Marsaglias and Tsangs Ziggurat algorithm
add richer operators for testing interval membership
Generalize symbolic set operators a bit.

Previously they were defined in Interval.scala but lived in the
spire.optiona.unicode package. Now, the implicit class has been
moved there, and a companion class for Set[A] has been added as
well.
very minor GUIDE typo
pmin, pmax syntax.
Scala wrappers ? please have a look
Merge commit 'ad44464ef50b456037e42b92b19889ad88c5006a'
Added authorship of PartialOrder.