p: in_app_purchase - 28 pull request(s)

2606 Updated README.md typo (cla: yes, p: in_app_purchase, waiting for tree to go green)

2822 [in_app_purchase] Add support for InApp subscription upgrade/downgrade (cla: yes, p: in_app_purchase, platform-android, waiting for tree to go green)

2846 [in_app_purchase] Typos in comments (cla: yes, p: in_app_purchase, waiting for tree to go green)