Update Model.php

[Healyhatman]

Add a static constructor so can more cleanly chain after instantiation, like this

$rate = EarningsRate::make($application)->setEarningsType(...)->someOtherThing(...);

Remove the EARNINGTYPE_FIXED rate because it's definitely not valid in Xero anymore. If you don't think that's the right call let me know.

[calcinai]

@Healyhatman are you doing this to match style with a particular framework? I'm just wondering about which verb is mose appropriate (I see ::create() fairly regularly. I assume you're just trying to avoid

$rate = (new EarningsRate($application))->setEarningsType(...)->someOtherThing(...)

Which I also see a bit.

[Healyhatman]

It matches Laravel, where create() would immediately store a model in the database but make would just instantiate it

[Healyhatman]

@calcinai yes just trying to avoid (new Model($app))-> because it makes me sad

[calcinai]

Agreed