Electron 10 support

[zzmao]

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Chromium in Electron 9 are lack of some wasm support.

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Electron 10

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[nklayman]

You can upgrade to Electron 10 manually and it should work fine. The reason I haven't added it to the installation prompts is because Spectron (testing library for Electron) is broken with Electron v10. See this issue for more details: electron-userland/spectron#720. Once that issue is fixed and testing will work then I will add it as an option for the installer.

[zzmao]

@nklayman thanks!