Minor cleanup and one minor fix
Minor cleanup and one minor fix

- Panning was ignoring the first frame of movement; this (very small) discrepancy is fixed
- Add and re-word comments
- Shed some whitespace

karimnaaji/tangram-es,hjanetzek/tangram-es,cleeus/tangram-es,xvilan/tangram-es,cleeus/tangram-es,karimnaaji/tangram-es,karimnaaji/tangram-es,karimnaaji/tangram-es,tangrams/tangram-es,tangrams/tangram-es,quitejonny/tangram-es,tangrams/tangram-es,cleeus/tangram-es,tangrams/tangram-es,cleeus/tangram-es,xvilan/tangram-es,tangrams/tangram-es,hjanetzek/tangram-es,xvilan/tangram-es,tangrams/tangram-es,hjanetzek/tangram-es,tangrams/tangram-es,xvilan/tangram-es,cleeus/tangram-es,quitejonny/tangram-es,hjanetzek/tangram-es,quitejonny/tangram-es,cleeus/tangram-es,quitejonny/tangram-es,quitejonny/tangram-es,quitejonny/tangram-es