Version 0.160 changelist:

Added support for multi-piece parts with super-flexible sizing
Improved piston functionality to allow far more range of motion and customizability
Updated parts: Small Piston, Large Piston, and Side Piston use new systems (revised 3-part models)
Updated parts: Side Suspension and Suspension use new flexible sizing (revised 3-part models)
Added new part: Suspension S (contract from Suspension)
Added new parts: Mini Beam (expandable to Mini Beam XL) and Mini Beam S (contractable to Mini Beam XS)
Added new parts: 4-Way Cross Mini (contract from Cross 4-Way) and Angle 90 Mini (contract from Angle 90)
Added new parts: Y-Split Mini (contract from 3-Way Y-Split) and T-Split Mini (contract from 3-Way T-Split)
Added new parts: Power Pivot S and Swivel 90 S (contract from full-size versions)
Added new parts: Fast Swivel S and Power Swivel S (contract from full-size versions)
Added new parts: Dump Box XL, Hook XL, and Spiky Ball XL (expand from Dump Box, Hook, and Spiky Ball)
Added new parts: Wrecking Ball XL and Wrecking Ball S (expand from Wrecking ball)
Added new parts: Mini Wedge and Mini Wedge XL
Updated parts: Flex Swivel and Flex Pivot models reduced in thickness
Updated parts: Round Cover and Square Cover reduced in thickness (Square Cover renamed Mini Panel)
Added new parts: Round Cover S/XL and Mini Panel XL/XXL (expand from Round Cover and Mini Panel)
Add option to choose which part size you prefer to place (smaller, normal, bigger)
Fixed Fast Swivels not being affected by Overdrive
Increased power to Fast Swivels (particularly high powered ones)
Increased the max angular velocity of vehicle parts (affects fast swivels in particular)
Changed camera to go way higher and fixed shadows when doing so
Increased max altitude parameter so balloons/rockets/etc can go higher
Added new big impact effects for large downward player impacts on ground/structures
Added toughness to blocks in structure editor
- INV makes them indestructible, otherwise is a hitpoint multiplier
Added connection to front of thruster (also fixes issue with them not aligning with mirror mode)
Fixed some cases of undo in ground editor (loops became unselectable, could also stop working completely)
Fixed Drill XL and Skid XL mass being too light
Increased size of water depth texture for island/water depth effects
Removed most particle effects from water under land
Fixed Magnets, Thrusters, and Fast Swivel not activating the overdrive glow
Renamed some parts to have more consistency (still not 100% consistent, but good enough for now)
Prevented both help and advanced mode from being active at the same time (build mode)