Merge pull request pili-engineering#56 from jpxiong/master

release v1.3.9

Merge pull request pili-engineering#52 from jpxiong/master

release v1.3.8

Merge pull request pili-engineering#49 from jpxiong/master

release v1.3.7

Merge pull request pili-engineering#47 from jpxiong/master

remove pldroid-camera-streaming-1.3.5.jar from demo

Merge pull request pili-engineering#44 from jpxiong/master

release v1.3.5

Merge pull request pili-engineering#41 from jpxiong/master

release v1.3.4

Merge pull request pili-engineering#38 from jpxiong/master

release v1.3.3

Merge pull request pili-engineering#37 from jpxiong/master

release v1.3.2

Merge pull request pili-engineering#23 from jpxiong/master

add the v1.3.1 jar into demo libs

Merge pull request pili-engineering#13 from jpxiong/master

release v1.2.3