drafted first visitors
drafted ConjunctionVisitor implementation
Merge branch 'orm' into search-visit
added ConjunctionVisitor and DisjunctionVisitor
added ConjunctionVisitor and DisjunctionVisitor
added NegationVisitor
fix tests
added Negation to PredicateBuilder
added GenericSpecificationVisitor (to verify)
Merge branch 'devel' of github.com:bards/Epic.NET into search-visit
renamed Relational/QueryBuilder in Relational/SourceRelationBuilder
Merge branch 'devel' of github.com:bards/Epic.NET into search-visit
fix merge conflict
initial identity mapping
Merge branch 'devel' of github.com:bards/Epic.NET into search-visit
Merge branch 'devel' into search-visit
improved doc and merged devel
removed some wrong generics
All expressions in Epic.Query derives Relational.AlgebraicExpression
Merge branch 'add-algebra' into search-visit