From LSP spec:
> A range in a text document expressed as (zero-based) start and end
> positions. A range is comparable to a selection in an editor. Therefore
> the end position is exclusive.
Problem: ocamlformat is configured to format files in-place and thus go
via creating a temporary file for that. Because temporary file resides
in a different directory ocamlformat can't find `.ocamlformat`
configuration files in an original location of source files.
Solution: ocamlformat since version 0.8 can read sources on stdin and
spur result on stdout. We reconfigure ocamlformat to use a simpler
interface.
* Fix flow linter to provide filename of the buffer
Related #173
* Fix flow linter not to fail on empty response
* Various improvement to message parsing
Andrey Popp