Ionide-vscode-fsharp: Upgrade to Fable 2

[MangelMaxime]

@Krzysztof-Cieslak Would you be ok, if I upgrade the repo to Fable 2.1 ?

In theory it will:

• Decrease the bundle size
• Improve the performance
• Be up to date again with latest Fable version
• Easier to start as dotnet fable is now replace with webpack

[Krzysztof-Cieslak]

I’d love to see that

[MangelMaxime]

Ok, I will give it a try. :)

[MangelMaxime]

Small update.

I got the project to compile and Ionide works.

Strange behavior/bugs:

• [ ] Intellisense, errors checking start when you open a *.fs files. I think it should start if there are some visible editors opened.
• [ ] Code generation is broken:
  
  
  
  • [ ] Record stub generation
  
  
  • [ ] Interface stub generation
  
  
  • [ ] Union case generation
  
  

I will use this issue to track the different bugs/strange behaviour I see. If am stuck, I will open a PR so others can take a look at it too.

[MangelMaxime]

I am waiting for Fable 2.2 to be released.

So I can do all at once and not redo the same work again :)