Fixed a small bug that might have made it jump crooket in rare situations.
Head now swings a little less.
Various minor tweaks.

Exchanged 3x3 hinges in spine for 1x1. Which made me able to:
Shorten the neck two block to move center of mass.
Add O2/H2 generator and a medium cargo container.
Made gait up/down keys more responsive.
Several minor tweeks.

Refined the jumping. So if moving, the jump is performed at the optimal time to preserve the momentum.
Made an embrace-for-landing stance.

Added the ability to jump with up key [Spacebar].
Bend body is moved to down key [C].
The legs got a bit more shape.
Several minor tweeks.