Fix syntax errors in documentation.
Documentation: correct subclassing SchemaNode examples.

Fixes #149 and fixes #155.
Merge pull request #161 from kotnik/subclschema

Documentation: correct subclassing SchemaNode examples.
Merge pull request #160 from kotnik/synerr

Fix syntax errors in documentation.
Update german translation
Merge pull request #176 from rbu/update-german-20140602

Update german translation
Add myself to CONTRIBUTORS
Update French translations
Merge pull request #178 from cedricmessiant/master

Update/fix French translations and add myself to contributors
Update basics.rst
Merge pull request #184 from fcofdez/patch-1

Update basics.rst
contributor's agreement.
add testcases
fixes over writing title
Merge pull request #185 from gjo/bypass_title_overwrite2

Bypass title overwrite2
update changelog
remove local iso8601 and use pypi version

When running some tests on another project I stumbled upon a failed
test that revealed a bug in colander's iso8601.  If you try to
deserialize "2014-09-09T15:15:57.516967" into a datetime object you
get `datetime.datetime(2014, 9, 9, 15, 15, 57, 516966)` (notice the
microseconds are off by 1).  I traced it down to this:

```
groups["fraction"] = int(float("0.%s" % groups["fraction"]) * 1e6)
```

`int(float("0.%s" % "516967") * 1e6)` is equal to 516966 due to
rounding.

I was going to fix it, but iso8601 is a currently maintained project
on pypi that has this issue (and possibly others) already fixed.
So, it makes much more sense to offload everything back to that project.

The only difference (besides the bug fixes) is following:

`iso8601.Utc` => `iso8601.iso8601.Utc`
`iso8601.FixedOffset` => `iso8601.iso8601.FixedOffset`
remove license note about iso8601
documented changes; added name to contibutors
py26 compatibility