With September here and training camp on the horizon, it’s time for an end-of-summer NHL tradition: looking back on the past few months and slapping a broad theme on them. Every year around this time, we pick through the summer’s headlines and arrive at a pithy title to summarize an entire offseason. Last year was the Summer of Analytics. The year before that was the Summer of LOL Maple Leafs. In 2012, it was the Summer of Lockout Preparation. (OK, technically that one was the Summer of Lockout Preparation Part III, Snider’s Revenge — but we all agreed that felt a little wordy.