[150834150] Added toggle option for custom logging in UnityAds adapter
[150458508] Added toggle option for custom logging in Flurry adapter
Merge pull request #45 from hkosacki/150834150_unityads_custom_logging

[150834150] Added toggle option for custom logging in UnityAds adapter
UnityAds adapter version 2.3.0 (UnityAds SDK 1.3.8)
Merge pull request #46 from hkosacki/150458508_flurry_verbose_logging

[150458508] Added toggle option for custom logging in Flurry adapter
Merge pull request #48 from fyber-lima/fix_unity_150053572

UnityAds adapter version 2.3.0 (UnityAds SDK 1.3.8)
iOS - add changelogs