I'd argue that the tone is what matters most and not the presence of emojis. For example, this is an example of a particularly bad changelog which isn't sprinkled with emojis. https://github.com/nodejs/node/blob/v2.5.0/deps/npm/CHANGELO...

Imagine trying to handle a production incident, going through such a changelog, reading "HAHA WHOOPS LIL SHINKWRAP ISSUE THERE LOL".

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