I have:
- Revised the documentation to be more clear about the possible backends
- Simplified the lsp setup code
- Removed redundant loading of company-lsp (is done by lsp-mode already)
- Made lsp the default backend for dart and mentioned that the analyser is
deprecated
The dart layer requires the official LSP server as the
emacs mode alternative is not longer properly maintained.
Therefore I have added some more description of how to
install the server properly and let the layer load
the LSP layer automatically.
In addition I have removed the unsupported variable
`dart-server-enable-analysis-server` from the
documentation.
See https://github.com/bradyt/dart-mode/wiki/LSP for
details.
