Supporting Xcode 11.4 Swift 5.2

2.3.7.1

Moving of pod specs

PianoID provider with social logins

Added separate PianoID provider with support social login (see README.md) . Also reworked parameter's setters of Composer for more convenient usage.

2.0.5 Supporting piano id user provider

Added PianoIdOAuthPopupViewController for supporting piano id user provider.
Added extended log information