Add support for Electron 7

[ottosson]

https://github.com/electron/electron/releases/tag/v7.0.0

I don't have a clue what's needed to make registry-js work with Electron 7, but just looking at #164 it looks like it is as simple as just adding -t 7.0.0 to prebuild-electron and prebuild-electron-ia32 and update the node-abi dependency?

Is there something else that's needed?

[shiftkey]

Is there something else that's needed?

Nope, that's it.

We may need also to bump node-abi as I can see electron/node-abi@efa7539 has been published. That will ensure prebuild and prebuild-install can detect Electron 7.

[shiftkey]

This is now available in v1.9.0 on NPM.

[ottosson]

I get an error when trying to run my project using Electron 7:

Error: Could not detect abi for version 7.0.0 and runtime electron. Updating "node-abi" might help solve this issue if it is a new release of electron

I have made sure the latest version of node-abi is installed in my node_modules.

[shiftkey]

@ottosson this really feels like #166 again and prebuild-install not finding the latest version.

[ottosson]

There were some issue with electron-rebuild. I know it's not necessary (from the warnings) but for some reason I needed it a while back for registry-js to build (don't know why 😑) and I've left it in the project since. Removing it seems to solve the issue.

Moving on! 😊