Allow to customize how identifiers must be wrapped

This would unlock scenarios such as automatically converting camelCase to snake_case and vise verse. See https://medium.com/p/956357872fe4

It could look something like this (db.js):

import knex from 'knex'

function wrapIdentifier(type, value) {
  if (type === 'as') return ....;
  if (type === 'select') return ....;
  return ...;
}

export default knex({
  client: 'pg',
  connection: process.env.DATABASE_URL,
  wrapIdentifier,
});

Please vote up if you’re planning to use this feature, or vote down if you think it shouldn’t be in the library.

Ref #929

[elhigu]

before christmas, maybe this month, maybe next

[elhigu]

This will be released in knex 0.14