increase compileSdkVersion to 28 for solved build problem

[DJafari]

current error in build release mode :

Execution failed for task ':speech_bubble:verifyReleaseResources'.      
> A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
   > Android resource linking failed                                    
     /Users/davood/.gradle/caches/transforms-2/files-2.1/55250e98b0a0d09676f3750ac9bd5dac/core-1.1.0/res/values/values.xml:142:5-173:25: AAPT: error: resource android:attr/fontVariationSettings not found.
                                                                        
     /Users/davood/.gradle/caches/transforms-2/files-2.1/55250e98b0a0d09676f3750ac9bd5dac/core-1.1.0/res/values/values.xml:142:5-173:25: AAPT: error: resource android:attr/ttcIndex not found.

[gaoyong06]

+1

[sebastianbuechleratcamaelion]

Pull-request is still open for fixing the problem. https://github.com/NilsBacke/PHSpeechBubble/pull/17/files

[DJafari]

unfortunately this project seems died, we can copy this file in our project and using it

p.s : this project must be created as package, it's not plugin, because there is no platform method in this package

[shinriyo]

@NilsBacke hey

[shinriyo]

@NilsBacke Thank you for marging