Packages & Identity & ProrationMode & BillingClient 2 (#84)

* Offerings and packages

* PR comments

* Changes Boolean to boolean

* Adds unknown package type as an option

* Identity Changes (#87)

* Makes identity changes

* Fixes Dokka

* Adds isAnonymous to Purchases class

* self review

* Makes cacheslastupdated nullable

* Updates to BillingClient 2.0.3 (#88)

* Upgrades to Billing Client 2.0.3

* Adds more tests

* Fixes Pending purchases (#90)

* Fixes pending purchases

* Adds extra getPurchaseType test

* Proration mode on subscription upgrade (#86)

* Update README.md

* Update README.md

* Update README.md

* Fixes license

* adding UpgradeInfo containing the proration mode

* changes requested

* compilation fixes

* Adds ProrationMode annotation

CHANGELOG.md

@@ -9,7 +9,7 @@
 
 ## 2.3.1
 
-- Fix NullPointerException in BilingWrapper ([#79](https://github.com/RevenueCat/purchases-android/pull/79))
+- Fix NullPointerException in BillingWrapper ([#79](https://github.com/RevenueCat/purchases-android/pull/79))
 - Handle missing INTERNET permissions when making network requests ([#78](https://github.com/RevenueCat/purchases-android/pull/78))
 
 ## 2.3.0

build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.40'
+    ext.kotlin_version = '1.3.50'
     ext.dokka_version = '0.9.17'
     repositories {
         jcenter()
@@ -10,20 +10,12 @@ buildscript {
     }
     dependencies {
         classpath 'com.vanniktech:gradle-maven-publish-plugin:0.9.0-SNAPSHOT'
-        classpath 'com.android.tools.build:gradle:3.4.1'
+        classpath 'com.android.tools.build:gradle:3.5.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
         classpath "org.jetbrains.dokka:dokka-android-gradle-plugin:$dokka_version"
     }
 }
 
-plugins {
-    id "io.gitlab.arturbosch.detekt" version "1.0.0-RC12"
-}
-
-allprojects {
-    apply from: "$rootDir/detekt.gradle"
-}
-
 subprojects {
     repositories {
         jcenter()