Compile on node 10 (by updating npm packages)

[apepper]

The current master of react-reveal can not be installed on node 10 (at least on my mac with catalina):

> [email protected] install ~/react-reveal/node_modules/fsevents
> node install

node-pre-gyp ERR! Tried to download(404): https://fsevents-binaries.s3-us-west-2.amazonaws.com/v1.1.3/fse-v1.1.3-node-v64-darwin-x64.tar.gz
node-pre-gyp ERR! Pre-built binaries not found for [email protected] and [email protected] (node-v64 ABI, unknown) (falling back to source compile with node-gyp)
node-pre-gyp ERR! Tried to download(undefined): https://fsevents-binaries.s3-us-west-2.amazonaws.com/v1.1.3/fse-v1.1.3-node-v64-darwin-x64.tar.gz
node-pre-gyp ERR! Pre-built binaries not found for [email protected] and [email protected] (node-v64 ABI, unknown) (falling back to source compile with node-gyp)
internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module 'nan'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Module.require (internal/modules/cjs/loader.js:692:17)
    at require (internal/modules/cjs/helpers.js:25:18)
    at [eval]:1:1
    at Script.runInThisContext (vm.js:122:20)
    at Object.runInThisContext (vm.js:329:38)
    at Object.<anonymous> ([eval]-wrapper:6:22)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at evalScript (internal/bootstrap/node.js:589:27)
gyp: Call to 'node -e "require('nan')"' returned exit status 1 while in binding.gyp. while trying to load binding.gyp

Upgrading gulp to version 4 helped. I did not upgrade babel from version 6 to 7 (for now). I also did not upgrade react, but left the version as is.

Also most packages, that can be updated without breaking the tests where updated - this massively reduces the npm audit warnings.