I came home a couple of hours ago, returning from a full day: the first two-thirds of my workday involved troubleshooting an application performance issue with my teammates, and the last third involved handing out RunKeeper swag at the Boston Marathon. I had been thinking I would write something all #BostonStrong-flavored about the experience of seeing all these people come out to spectate in defiance of last year’s madness. But instead I made myself some dinner, and while I was cooking I read Tom Preston-Werner’s blog post about leaving GitHub (for context, a good place to start is this TechCrunch story (trigger warning: hostile work environment)). …