29.0.1

• Integrate visualfsharp master from 165b736 (2019-03-29) to 25560f4 (2019-05-24)
• Notable improvements include:
  • Improved Portable PDB debugging
  • Misc IL generation fixes
  • Representing inlined mutable variables in the AST
  • Moving on from net46 targeting
  • Fixes for anonymous record generation
  • Dependency updates
  • Checking for constructors in FSharpMemberOrFunctionOrValue
  • Fix unused opens false positive for record fields