Added an annual plan, immediately regretted not doing it sooner

Added annual plan. 18% of new signups are annual now. Small win.

Two months of cash up front changes what you can do. I could finally pay for the analytics tool I had been avoiding, and hire a contractor for the migration work I kept pushing.

The discount is two months free, which is standard and probably leaving money on the table. I will test 15% later. For now the goal is cash, not margin.