v1.4.0-beta4

• New! Support for a Metadata-as-Source view, much like Visual Studio's, when navigating to a symbol for which source code is unavailable. (#165)
• Don't compute diagnostics (i.e. errors and warnings) for large projects/solutions. This should help issues that some are experiencing with larger projects, though there is more work to be done. (#269)
• Fix syntax-highlighting for multi-dimensional arrays in parameters. (#657)