libjobqueue javadoc and scoping.

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Move responsibility for Context injection out of JavaSerializer.

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Added README

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Fix README.md formatting

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Closes #2101
Update JobManager README.md

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silly actionbar shadow issue

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fix AppCompat theme crash

Fixes #2084
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add "elevation" window overlay for android 4.x too

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materialize conversation item indicators

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remove unused image resources

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optimize new assets

Thanks to @pejakm for pointing out the emoji optimization.
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Potential fix for BroadcastReceiver crash.

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use latest appcompat and build tools, add dagger pin

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encapsulated delivery icon to separate from lock

and as a bonus some tweaked text sizes and colors
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No more push encoding pretense.

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proguard: don't warn for test classes

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Move targetSdkVersion back down to 19.

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Update gradle-witness and actually use spongycastle.

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proguard has guarded its last pro

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make the light theme light

Fixes #2111
Tested on GB and LP
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