Publisher Mobile SDK for Android v2.0.5

Merge pull request #8 from affilinet/feature/AFF-362-update-demo-apps

AFF-365 Adequate Placeholders

Publisher Mobile SDK for Android v2.0.4

• Enhanced logging
• WS request bug fixes
• okhttp3 implementation

Publisher Mobile SDK for Android v2.0.3

Initial productive release

• AdDelivery within Publisher Container with refresh option
• Product Data Webservice (PDWS3) integration