Merge pull request #52 from jinty/master

documentation fix
add dev and testing setup.py aliases, fix changelog after reviewing commits
prep for 0.9.8
test checkin for shining panda
test checkin for shining panda
line lengths and spellings
Fixed key names of flattened structure
Merge pull request #53 from riffm/patch-1

Fixed key names of flattened structure (in docs)
fix typo in `SchemaNode` documentation
Add Portuguese translations
Merge pull request #56 from teixas/translations-0.9.7

Add Portuguese translations
Update german translation
	Allow use of 'None' as 'missing' for Numbers.
Allow the use of 'missing=None' for Number
- Create a ``colander.Money`` type that is a Decimal type with
  two-decimal-point precision rounded-up.

- Allow ``quant`` and ``rounding`` args to ``colander.Decimal`` constructor.
- ``luhnok`` validator added (credit card luhn mod10 validator).
anticipate noninteger input in luhnok
- Add an ``insert`` method to SchemaNode objects.
Features
~~~~~~~~

- Better class-based mapping schema inheritance model.

  * A node declared in a subclass of a mapping schema superclass now
    overrides any node with the same name inherited from any superclass.
    Previously, it just repeated and didn't override.

  * A ``schema_order`` attribute may be passed to SchemaNode constructor.
    This is an integer which defines the position in a parent node's child
    ordering.

  * ``colander.FIRST`` and ``colander.LAST`` constants are available for
    passing in as ``schema_order``.

Backwards Incompatibilities
~~~~~~~~~~~~~~~~~~~~~~~~~~~

- The inheritance changes required a minor backwards incompatibility: calling
  ``__setitem__`` on a SchemaNode will no longer raise ``KeyError`` when
  attempting to set a subnode into a node that doesn't already have an
  existing subnode by that name.  Instead, the subnode will be appended to
  the child list.

Documentation
~~~~~~~~~~~~~

- A "Schema Inheritance" section was added to the Basics chapter
  documentation.
replace schema_order with insert_before.  closes #58