Upgrade dependencies

[mati865]

I had hard time upgrading lsp-types so it's left with old version.

[bors]

☔ The latest upstream changes (presumably #1562) made this pull request unmergeable. Please resolve the merge conflicts.

[Xanewok]

Huh, it's interesting that we still pulled in the rustc-serialize... Sorry for the conflict due to #1562, could you please rebase it?

[mati865]

Huh, it's interesting that we still pulled in the rustc-serialize...

Noticed it while checking Rust's Cargo.lock 😃

Sorry for the conflict due to #1562, could you please rebase it?

No problem.

[bors]

☔ The latest upstream changes (presumably #1563) made this pull request unmergeable. Please resolve the merge conflicts.

[mati865]

Travis Linux build is still the only CI that passes tests.

[Xanewok]

Thanks and sorry for waiting! This only needs resolving the recent tooltip test breakage but that's let's do that separately.

[mati865]

sorry for waiting

No problem.

This only needs resolving the recent tooltip test breakage but that's let's do that separately.

I have no idea how to fix it but it has broken for two weeks.
lsp-types is out of date if somebody is brave enough to dive into it.

[Xanewok]

lsp-types is out of date if somebody is brave enough to dive into it.

That might be slightly more difficult than it sounds. We pinned the version because the extension relies on the older format of the progress messages, which (unfortunately?) changed in preparation for the official LSP release. The fix would be to extract them again to a local definition, as before, use them and continue to use the newer versionf of the lsp-types.