Make PersistentSet more similar to Base.Set
Better type handling in lists
Extend == as well.
Dust off tests, make them work
Add test for equality after dissoc
Get rid of bitmix
Retain nuanced nature of == and isequal
Merge pull request #14 from shashi/tests

Working for Julia 0.3
Merge remote-tracking branch 'origin/master' into fixes
Better pset constructors
Merge pull request #15 from shashi/fixes

Some fixes to plist and pset
Better pvec API