Log message:
py-expiringdict: fix path to py-coveralls

Log message:
devel/py-expiringdict: import py-expiringdict-1.2.2

expiringdict is a Python caching library. The core of the library
is ExpiringDict class which is an ordered dictionary with auto-expiring
values for caching purposes. Expiration happens on any access,
object is locked during cleanup from expired values. ExpiringDict
can not store more than `max_len` elements - the oldest will be
deleted.