Some play with suspendable transactions etc

[kennethshackleton]

ref
https://developer.android.com/reference/kotlin/androidx/room/package-summary#withtransaction
https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:room/room-ktx/src/main/java/androidx/room/RoomDatabase.kt
https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:room/room-runtime/src/main/java/androidx/room/RoomDatabase.java?q=roomdatabase.java
https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/as-context-element.html
https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/-thread-context-element/index.html
https://kotlinlang.org/docs/shared-mutable-state-and-concurrency.html
http://gee.cs.oswego.edu/dl/cpj/jmm.html
Kotlin/kotlinx.coroutines#2478
Kotlin/kotlinx.coroutines#119
https://android.googlesource.com/platform/frameworks/support/+/refs/heads/androidx-main/room/integration-tests/kotlintestapp/src/androidTest/java/androidx/room/integration/kotlintestapp/test/SuspendingQueryTest.kt

[kennethshackleton]

[codecov]

Codecov Report

Merging #152 (0924162) into main (3608e83) will decrease coverage by 0.33%.
The diff coverage is 87.50%.

❗ Current head 0924162 differs from pull request most recent head 85f9f10. Consider uploading reports for the commit 85f9f10 to get more accurate results

@@             Coverage Diff              @@
##               main     #152      +/-   ##
============================================
- Coverage     97.17%   96.84%   -0.34%     
+ Complexity      366      365       -1     
============================================
  Files            49       49              
  Lines          1877     1931      +54     
  Branches        257      261       +4     
============================================
+ Hits           1824     1870      +46     
- Misses           30       35       +5     
- Partials         23       26       +3     

Impacted Files	Coverage Δ
...rg/selekt/android/support/SupportSQLiteDatabase.kt	100.00% <ø> (ø)
...lin/com/bloomberg/selekt/android/SQLiteDatabase.kt	85.59% <80.00%> (-0.25%)	⬇️
.../src/main/kotlin/com/bloomberg/selekt/Databases.kt	95.56% <87.17%> (-1.55%)	⬇️
...b/src/main/kotlin/com/bloomberg/selekt/Sessions.kt	98.24% <90.00%> (-1.76%)	⬇️
...rc/main/kotlin/com/bloomberg/selekt/pools/Mutex.kt	86.20% <0.00%> (-1.73%)	⬇️

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