Build fails for Electron 7 + Node 12

[sergei-dyshel]

When building for Electron 7 with Node 12.16.1, e.g.

export npm_config_target=7.1.10
export npm_config_disturl=https://atom.io/download/atom-shell
npm install

I'm getting many errors of this kind:

../src/bindings/range-wrapper.cc:18:52: error: no matching member function for call
      to 'Get'
  auto start = PointWrapper::point_from_js(object->Get(Nan::New(start_string)));
                                           ~~~~~~~~^~~
/Users/sergei/Library/Caches/node-gyp/7.1.10/include/node/v8.h:3502:43: note:
      candidate function not viable: requires 2 arguments, but 1 was provided
  V8_WARN_UNUSED_RESULT MaybeLocal<Value> Get(Local<Context> context,
                                          ^
/Users/sergei/Library/Caches/node-gyp/7.1.10/include/node/v8.h:3505:43: note:
      candidate function not viable: requires 2 arguments, but 1 was provided
  V8_WARN_UNUSED_RESULT MaybeLocal<Value> Get(Local<Context> context,
                                          ^

Looks like v8 version used, doesn't have deprecated signatures Object::Get, Object::Set etc., used here.