Explore removing moment as a peerDependency

[mcMickJuice]

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The moment library is listed as a peerDependency to this library. Lots of apps use moment however it seems a little unreasonable to require this lib (which is huge - though this analysis likely includes the internationalization code) when it's used for admittedly a small of amount of use cases:

• label formatting
• minor date manipulation

I'd like to explore other date libraries, like date-fns which has a smaller footprint. Perhaps we could take an approach of injecting in the users preferred date library, similar to what this library does.

[HollyPony]

Hi ! Using date-fns in my and won't to get moment AND lodash in my dependencies I made a working POC using date-fns. It seems to work fine for my own purposes. It should need more work to be 100% production compliant.

Additionnaly I'm looking to remove date-fns too to be "time library free" for users. But this could be more complex to maintain 🤷‍♂ .

Anyway, feedbacks are welcome :)

HollyPony@dcb6467

NOTE: I kept moment for dev / demo / tests purposes but it's not in final build

[Ilaiwi]

@HollyPony this is coming down the line not now though. We want to do something similar to this.
#510 (comment)
If you can put the groundwork for this change it will be much appreciated

[anisebamford]

#819
This pr replaces moment with js vanilla Date. It also allows moment to be added back in if custom renderers use it.