.get(), .all(): allow search?

[wmertens]

.all() is rarely used and has no parameters, so it would be a nice alias for .searchAll(attrs, options) when arguments are passed.

Likewise, .get() always has a scalar for the first argument, so if the first argument is an object, .get(attrs, options) could be an alias for .searchOne(attrs, options)

@Dzieni thoughts? One or the other or both or none?