Drop support for Node 0.10 and 0.12

[honzajavorek]

🚀 Why this change?

Node 0.10 and 0.12 are not supported anymore, so we're removing them from CI and we're removing any related workarounds.

• See Drop support for 0.10 and 0.12 at the end of 2016 #660 for the list of workarounds which this PR fixes.
• See https://github.com/nodejs/LTS#lts-schedule for details on why Node.js 0.10 and 0.12 can be both considered as officially dead since 2016-12-31.
• This is a breaking change, since we're dropping support of certain runtimes. Merging this PR should release Dredd 3.0.0.

📝 Related issues and Pull Requests

Waits for apiaryio/dredd-transactions#69 and apiaryio/gavel.js#86, closes #660.

✅ What didn't I forget?

• To put Conventional Changelog prefixes in front of all my commits and run npm run lint

[ddelnano]

@honzajavorek we should make sure the hook servers use node > 0.12 in their travis jobs. I just had both the goodman and php hooks repo break on the way it was installing dredd previously. And I believe the Travis default is not > 0.12

[honzajavorek]

@ddelnano That's very good point! Are you sure Travis' default Node version is less than 4? I found this: travis-ci/travis-ci#5218

[ddelnano]

@honzajavorek doesn't look like it on the latest dredd-hooks-php build that I had to fix a few days ago.

[ddelnano]

Here is the link for reference https://travis-ci.org/ddelnano/dredd-hooks-php/jobs/199693011

[honzajavorek]

I found this, but to me it seems to be overly complicated. Maybe

before_install:
  - "nvm install node && nvm use node"
  - "node --version"
  - "npm --version"

would be sufficient. node should be an alias for the latest version of Node.

[honzajavorek]

Nock could not be updated until now, because they dropped 0.10 and 0.12 support in their new versions. See #660.

[honzajavorek]

This file isn't actively used anywhere and should be deprecated by #422 in the future, but since it's still in the repo, I've updated it.

[ddelnano]

@honzajavorek anything else that needs updated before this can be merged?

[honzajavorek]

I think the only missing part is apiaryio/dredd-hooks-ruby#32 now.

[honzajavorek]

@miiila @w-vi I requested a review from both of you, but one review from either of you will do the job. So who comes first, wins 🥇 If the changes are all right, please merge this right away.

[w-vi]

@HJ @miiila done

🏅 🏆