Stirling 1.6.3

Signed-off-by: Alexander Laamanen <alexander.laamanen@valotrading.fi>
Stirling 1.6.4-SNAPSHOT

Signed-off-by: Alexander Laamanen <alexander.laamanen@valotrading.fi>
Merge pull request #163 from valotrading/releases/1.6.3

Releases/1.6.3