version 4.5.3

これは試験リリースです。

Updates:

• update translators list in ActAbout.

Deletes:

• remove reference to jcenter() repos.
• include anko's aar to source tree.

Dependency updates:

• Android gradle plugin 4.2.0
• Gradle 6.9
• kotlin 1.5.0
• kotlinx.coroutines 1.4.3
• junit 4.13.2
• firebase-messaging:21.1.0
• androidx.annotation:1.2.0
• androidx.recyclerview:1.2.0
• exoplayer:2.13.3
• androidx.lifecycle:lifecycle-viewmodel:2.3.1