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topics: move the logic to change or clear current topic into a new function
Sun, 25 Jun 2017 06:47:59 +0530, by Pulkit Goyal
tests: expand output to check topic activation
Mon, 26 Jun 2017 17:20:17 +0200, by Pierre-Yves David
branching: merge stable into default
Sun, 25 Jun 2017 18:37:42 +0200, by Pierre-Yves David

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