Sync electron-* dependencies with Atom.

[DeeDeeG]

Summary

Please sync electron-mksnapshot with Atom.

Motivation

• The old mksnapshot binaries were very large on Linux, for some reason. (See mksnapshot-v4.2.0-linux-[arch].zip, these are ~350-480 MB on Linux, ~30-35 MB on macOS and Windows.) This makes building Atom slower and use more network data and disk space on Linux than it has to.
• Judging by this repo's commit history, staying in sync with Atom has been a goal in the past. Testing on the same version as Atom should help stay on top of any Electron-related bugs when using this in Atom.

Describe alternatives you've considered

N/A, just bumping depednencies and syncing with Atom.

Additional context

Atom is on electron-mksnapshot ^0.4.3, and electron-mksnapshot ^9.0.2*

• electron-mksnapshot 9.0.2 allows you to install a mksnapshot binary from an exact Electron version, down to the patch level. This requires installing electron-mksnapshot with the ELECTRON_CUSTOM_VERSION env var set to the version of electron you're targeting. Atom is currently targeting Electron 6.1.12, and configuring electron-mksnapshot to download the exact correct mksnapshot binary using this ELECTRON_CUSTOM_VERSION env var.

[smashwilson]

👍🏻

I don't suppose you'd have time to put a pull request together? I could get you a quick merge if you did 😇

[DeeDeeG]

Yep, I was looking to next see how hard this turned out to be, right after posting the issue. Thank you for the quick reply!

[DeeDeeG]

Closed by #2513. Thanks for merging.