Extend Expression to support double
[WIP] [FFMPEG] Change namespace to FFmpeg and misc hax
Add DebuggerDisplay attribute to Declaration
Add DebuggerDisplay attribute to MacroExpansion and MacroDefinition
Change ASTVisitor so it properly visits nested declaration contexts (e.g. Classes inside Classes)
Fix GenerateWrapperForUnsupportedArrayFieldsPass so it properly does nested unwrapping (for e.g. multi-dimensional (>2) arrays)