Update assembly and nuget spec versions for RC2 release

Update assembly and nuget spec versions for RC1 release

Update assembly version information to 2.2.0-beta1

Updated Npgsql Assembly info and Nuget spec files to 2.1.3

Fix npgsql#193.

This change breaks support added in npgsql#135. This is a temporary fix for
regression with NHibernate use. Glen Parker is working on a permanent fix.

Bump version to 2.1.1.

Bump version to 2.1.0 release

Bump version to 2.1.0-rc1

Npgsql 2.1.0-beta1

Updated for 2.0.14.3.