* build(deps): move @types/os-locale from packages/embark to packages/core/i18n
* build(deps) move @types/globule from packages/embark to packages/plugins/coverage
* build(deps): refactor stack/{api,proxy,webserver} deps relative to packages/embark
* build(deps): remove unneeded @types/async dep from packages/stack/test-runner
* build(deps): remove unneeded deps from packages/embark
BREAKING CHANGE:
node: >=10.17.0 <12.0.0
npm: >=6.11.3
yarn: >=1.19.1
node v10.17.0 is the latest in the 10.x series and is still in the Active LTS
lifecycle. Embark is still not compatible with node's 12.x and 13.x
series (because of some dependencies), otherwise it would probably make sense
to bump our minimum supported node version all the way to the most recent 12.x
release.
npm v6.11.3 is the version that's bundled with node v10.17.0.
yarn v1.19.1 is the most recent version as of the time node v10.17.0 was
released.
It's principal use was in `stack/compiler`, but that package was refactored
in #1878 to use async/await. There was a replica in
`packages/embark/src/lib/utils/async_extend.js` but it wasn't being used to do
async operations and could be replaced with `Object.entries().forEach()`. It
was required by `plugins/vyper` but the wrapper's custom `eachObject` method
wasn't being used. `stack/api` had it as a dependency but wasn't using it.