Improvements:

• Board is now 1.2" square. This provides full support to all four corners of the sensor making soldering it on straight a non-fiddly process.
• It also adds some space to put sensibly sized solder jumpers for addressing
• The addition of a 10k resistor array for address pulldowns makes addressing easier and provides the unit with a default address - one less thing to do prior to testing.
• stainless steel stencil and reflow oven used this time. Much tidier result. All units tested good with no rework needed.