Added check of registering type
Merge branch 'snabix'
Big Oups
Version test
Some testing versionization improvements
Xml stream fix. Yeeee! One trap less!
Small changes
Version changes, plus access changes, plus optional, plus constructing
Aliases for registered types. Need tests
Version numeric changes
Added reference version for access
Special accessor object
Test accessor optional
Revert "Version test"

This reverts commit 68762e58665f19aed7256b7d84c5cabe3ed04898.
Time for reverts!
Accessor interface improved and xml-reader bug fixed
Test fix and small refactoring
Free to not so free
Started transformation from streaming binary to full-featured serializer