New release: card.io 5.5.0 for Android

[Luke Korth]

Hello from card.io!

We have posted version 5.5.0 of card.io for Android to GitHub (https://github.com/card-io/card.io-Android-SDK).

From the release notes:

5.5.0

• Update Gradle build plugin to 2.2.3.
• Update compile and target SDK versions to 25.
• Update NDK to r13b.
• Increase minSdkVersion to 16.
• Upgrade OpenCV to 2.4.13.

Thanks!

@cardio