multiple stream versions galore

[pkit]

Is there any reason why stream-browserify depends on readable-stream@3.6.0 while browserify itself depends on readable-stream@^2 ?
Right now streams are kind of unusable:

1. stream-browserify dependency tree is botched see here inheritance is botched stream-browserify#25
2. Using readable-stream directly leads to multiple versions in the bundle which in turn leads again to no inheritance anywhere.
3. readable-stream has inspect bug here Fix/remove node globals nodejs/readable-stream#435 (comment) which prevents me from debugging why there is any difference in Stream prototypes...

If there is no particular reason for such behavior I can create PR(s) that fix it, but maybe I'm missing something?

[legobeat]

Attempt at addressing this in #2070

[legobeat]

@pkit see #1880 (comment)