🏷️ Set version to 0.7.2 + Document release steps (#414) #727

Job	Run time
Traits (kazuho-picojson)	19s
Traits (boost-json)	11s
Traits (nlohmann-json)	14s
Traits (danielaparker-jsoncons)	14s
Traits (open-source-parsers-jsoncpp)	25s
	1m 23s

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