NF: RandomClassifier (Random and RandomSame in warehouse)

Primarily for testing or to quickly check if there is no inherent
problems with the method (e.g. double-dipping)
ENH: slight enhancements to 'hist' ('same' for *lim) and smellit example
RF: Constraints are now in place in all uses of the Parameter class
(obtained by converting the textual description from allowedtype keyword)
BF: typo in __repr__ (at least I reviewed my PR :-P)
RF: FxMapper -- renamed order="sorted" into more adequate "uattrs"
Changelog entry for preceeding changes
Merge pull request #215 from yarikoptic/enh/fxmapper_order

BF+ENH: FxMapper to make output order of groups deterministic (sorted by default)
BF: pruned leftover inplace test failing test_suite
Merge pull request #213 from yarikoptic/enh/smellit_hist

ENH: slight enhancements to 'hist' ('same' for *lim) and smellit example
BF: adjusting __tags__ and tests for fresh bleeding edge Random Classifier which now also provides estimates
Merge pull request #207 from yarikoptic/enh/random_clf

NF: RandomClassifier (Random and RandomSame in warehouse)
Merge branch 'master' of https://github.com/PyMVPA/PyMVPA into constraints
NF+BF: Added EnsureTupleOf to handle tuples
Merge pull request #214 from neurosbh/constraints

RF: Constraints are now in place in all uses of the Parameter class
ENH: to complement migration to use constraints in dummy clfs
ENH: minor typos and removing unused import (found uncommitted)
ENH: assert_warnings context manager to assert either warnings were raised + DeprecationWarning for allowedtype