I have an earlier TECK from them, and it was OK, but the middle row used weird custom keys so key swapping was not possible in the middle stack. This fixes that

I have an earlier TECK from them, and it was OK, but the middle row used weird custom keys so key swapping was not possible in the middle stack. This fixes that and goes with a slightly more toward ergodox layout. The interesting thing is the switches. Optical switches should never fail, unless dust intrudes. It's not a well-tested technology but time will tell on the design.