Crash bug fixes

None of these crashes have instructions to reproduce, so this release is intended to deploy the fixes in the wild to see if reports of these crashes go away.

To use this release, you must download the aar file attached to this release, and configure it with your project like so:

• Edit your outermost build.gradle file to add an libs entry like so:

     allprojects {
         repositories {
             google()
             jcenter()
             flatDir {
                 dirs 'libs'
             }
         }
     }

• Edit your innermost build.gradle file to add the beta library AAR as a dependency like so:

dependencies {
    implementation 'org.altbeacon:android-beacon-library:2.16.3-beta2@aar'
}

• Create a /libs folder next to the innermost build.gradle above, then download and copy the aar file attached to this release into this folder.