1. Added "Dynamo.2012.sln", "FScheme.2012.fsproj" to work with VS2012.
2. Conditionally define variable "RevitAsmPath" in projects that make use of Revit assemblies.
Merge remote-tracking branch 'upstream/master'
Merged "src/Dynamo.2012.sln" with the updated "src/Dynamo.sln"
AstBuilder: create DesignScript AST for Dynamo graph
Merge remote-tracking branch 'upstream/master'
Updated "Dynamo.2012.sln" to include "DSCoreNodes" and "DSCoreNodesTests" projects.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Generate 64bit image for DynamoSandbox
Implemented "UndoRedoRecorder.cs" skeleton class just to illustrate the idea
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Renamed "dynWorkspaceModel/dynModelBase" to "WorkspaceModel/ModelBase"
Code refactoring to follow naming convention
fix for #411 copy/paste crash
formula node unit test
refactored some parameter names