All examples broken @v8.3.0

[ogdakke]

All example pages fail to load, since they are trying to load scripts from unpkg, which don't exist anymore.
This is due to the version not being fixed in the scripts that load react, redux, etc. here and thus the newest version of those packages is used.

Want to open this as it's been bugging me for a while. Once I have time, I could take a look at making a PR for this, if there is still activity here to get that reviewed.