bump vsn 4.4.2

bump vsn 4.4.1

bump vsn

bump to 4.3.1

add changelog and bump to 4.3.0

Merge pull request ipinfo#50 from ipinfo/uman/maps

Add map integration.

Merge pull request ipinfo#37 from ipinfo/uman/better-batch-ops

Improved batch processing

skip batch tests without token.

the token is required to make batch reqs

Major bump - DefaultCache's constructor interface was changed a bit

Merge pull request ipinfo#13 from ipinfo/uman/fix-deps

Fix missing `six` dependency