Merge pull request #3 from soonhokong/master

fix(src/statSMT_sq.cpp): uninitialized members
add bouncing_ball
Create thermostat_ld.pdrh
Create thermostat_ed.pdrh
Create scaled_prostate_infix.pdrh
Create dual_watertank.pdrh
Create watertank_4m.pdrh
Create gear_shift_auto.pdrh
Create queueing_system.pdrh