APIv4 - Add keyword to select all custom fields

[colemanw]

Overview

Adds a convenience feature to APIv4, making it easy to select all custom fields.

Before

APIv4 Get only selects core fields by default; custom fields must be added one-at-a-time or on a per-group basis.

After

APIv4 Get only selects core fields by default, but all custom fields can be added with a simple keyword.

Technical Details

To select all core + custom fields, select ['*', 'custom.*'].

Comments

Updated tests, docs, and the API Explorer :)

[civibot]

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[eileenmcnaughton]

Api version 2 all over again! Still I can't see a problem with it & I guess you are finding it useful for the search builder so I'm OK with it