Handle multiple paybox accounts

[sarramegnag]

Greetings,

Huge PR related to #89.
Unfortunatly I think it would be too hard to handle backward compatibility.

Thanks for your review and feel free to ask if you have any questions.

Regards,

Guillaume

[acidjames]

@Spike31 Is this PR worth a v3 tag ?

(i've changed jobs now and i won't be able to continue support on this plugin unfortunately but i think this PR is worth some investigation)

James

[sarramegnag]

Just for the information, we're using my fork in production since one year and a half. No problem until now with direct payments (we're not using recurring payments).

[gilles-g]

Well...
Handle multiple accounts is not common.

I'm not sure this is a feature we would like to see.

Or create an other bundle with a dps on that bundle, i don't know.
Maybe we can mention your fork on the documentation, just in case