Notable side-effects:
- loopback no longer exports "caller" and "arguments" properties
- kv-memory connector is now properly added to the connector registry
- the file "test/support.js" was finally removed
Relax the assertions to verify only the integer part of the distances.
The decimal part is subject to small variances depending on the exact
implementation of floating-point arithmetic.
For example, the distance calculated on Node v0.11.13 is different
than the distance calculated on Node v0.10.x.