Implementation of InstanceIdClient to allow subscribe/unsubscribe to topic#94

Merged

hiranya911 merged 14 commits intofirebase:masterfrom

Leo-Mepham:master

Jul 31, 2019

Commits on Jul 24, 2019

Compiles, ready for test
Leo
committed

Commits on Jul 25, 2019

Before removal
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Integration tests working as expected
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Fixing some renames
Leo
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Improve docs, add missing dispose
Leo
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Commits on Jul 27, 2019

PR comment resolutions
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Improve integation tests
Leo
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Commits on Jul 31, 2019