Kaepernick says 49ers changes “are for the good”

No matter how poorly a team’s offseason has gone, no player or coach or G.M. or owner ever will declare, “Man, we’re gonna suck this year.” And so it’s no surprise that 49ers quarterback Colin Kaepernick has gone glass-half-full when talking about a tumultuous stretch that included a coaching change, multiple new members of the…