version 0.2.3

• upgraded build files to Android Studio 3 with Kotlin extension
• added data export dialog for json and csv export

version 0.2.2

• added upload of Tidepool upload metadata
• fixed plot marker being out of screen

version 0.2.1

• integration of Tidepool upload
• added timezone data
• added timestamp drift calculation
• better fitting of old and new readings
• better fitting of long term and short term data points
• added FPU calculator
• added settings for glucose unit and target area