Release 1.8.7 tilltue#172

fixed carhage build error

fixed tilltue#176: warnings bundle resouece

Release 1.8.4

Creating Thread-Safe Dictionary
Issue tilltue#171 , tilltue#169 PR: tilltue#168

Release 1.8.4 : Swift 5.0

revert commit : compatible swift 4.0 compactMap -> flatMap

Bug Fix: if used grouped by date, showing camera when select first ro…

…w in sections

Readme update: CustomDataSources

Merge PR