[zaphod-v0.3]: [bug] Syntax error in test_zaphod.py

SYNOPSIS
[modified]m42/test/test_zaphod.py: Indentation error in code.
[zaphod-v0.3]: [bug] Prefer 127.0.0.1 rather than 'localhost' for IPv4 loopback.

SYNOPSIS
[modified]m42/zaphod.py: Use 127.0.0.1 rather than 'localhost' for loopback.

DETAILS
Using 'localhost' as the hostname is not reliable when connecting
to the IPv4 loopback interface, as it could default to refering to
the IPv6 interface. Specify the IPv4 loopback interface using the IP
address 127.0.0.1 instead.
[zaphod-v0.3]: [bug] Use 127.0.0.1 even in test code.

SYNOPSIS
[modified]m42/test/test_zaphod.py: Use 127.0.0.1 rather than 'localhost'.