Add test runs with minimum dependency versions

[cameel]

Depends on #756. Merged.

[coveralls]

coverage: 84.537%. remained the same
when pulling f7e2bc9 on testing-min-dependencies
into f27395e on master.

[cameel]

For some reason CircleCI decided to change the name of the existing job to node-current-1. Not sure why, this does not happen with node-v12 for example. I tried adding name: node-current but it does not change this.

I guess we'll have to accept this and update the name of the required job in settings if we decide to merge the PR. I think we should make the min-dependencies jobs required as well.

[r0qs]

Isn't it because you have two node-current entries? I believe you may have accidentally duplicated the job name.

[cameel]

No. It has to be node-current for both because that's the name of the job that's being invoked in both cases:

solc-js/.circleci/config.yml

Lines 457 to 460 in 4aec1e7

	node-current:
	<<: *node-base
	docker:
	- image: cimg/node:current

The name of the run normally comes from that invoked job, but if it's invoked more than once, CircleCI adds numbers to disambiguate it. That's why there's the name parameter - note that it does not come from the job definition (see node-base). It's a built-in CircleCI thing meant for providing a custom name.

See also t_ext in Solidity CI config. We do it there the same way and it works.

[cameel]

I wish npm had built-in support for this but apparently it does not so it has to be done on our own. I saw an old feature request for npm install --minimum, but it was eventually closed as stale.