Changed Distance to be double instead of int
Make distance serialization culture-invariant
MappingManager fixes

Removed unnecessary exception for adding inherited classes,  fixed code
so that when child classes are registered, the parents are as well.
Changed SolrFieldModel to immutable.
Upgrade to Windsor 3.2
Upgrade to Autofac 2.6.3.862
Upgrade to Ninject 3.0.1.10
Merge branch 'master' of https://github.com/mausch/SolrNet