Query: add a defaultFields option

[joelmukuthu]

OR make the default fields option to be false, such that users get to set default fields themselves via Model.options

• remove Query.prototype.ensureFields

relates to #90

[privateOmega]

@joelmukuthu I am working on this.

[joelmukuthu]

Hi @privateOmega, thank you for choosing to contribute! About this issue, I'm not yet sure which is the best direction to take, though I'm leaning more towards making false the default value for the fields option. Since that'll be a breaking change it might be slower to get released.

Would you like to take up #161 instead? It has a much bigger impact, is less controversial and should be less complicated to work on. Let me know if you'd like some help getting started!

PS: Sorry for not replying to your earlier email, I was sick and in bed, only recovering now.

[privateOmega]

@joelmukuthu Sure. I will look into it. I've already partially worked on this concept by adding defaultFields. Hopefully we can revisit this at a later point of time.
It's alright, wishing you an immediate recovery.