Merge pull request #5 from afalkear/master

Removed EstimatedAge from ContactAttributes and set it as a direct attribute
v0.0.8
Merge pull request #6 from afalkear/master

EstimatedAge can be blank
v0.0.9
[#23177667] Social Network Id contact attribute type
[#23177667] facebook_id quick access method
fix
Merge pull request #7 from lperichon/master

[#23177667] Social Network Id contact attribute type
verion 0.0.10
minor change
Merge remote-tracking branch 'upstream/master'
[#21424979] Added Tags to ContactClient