The startup’s investors in the latest round include Union Square Ventures, Khosla Ventures, and Homebrew, doubling the total amount it has raised to date and pushing its valuation beyond the previous $120 million, according to a new report by Upstarts Media. (The startup didn’t disclose its new valuation, but PitchBook estimates it at more than $268 million, with “medium confidence.”) Users engage with Tolan’s app through a cartoonish character that’s mean