Merge pull request #68 from Callum-/dilatometer

Finished Dilatometer
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Add dilatometer as sensor

Changed type of functions as needed and called Sensor_Add appropriately.
writeup
Add dilatometer as sensor

Changed type of functions as needed and called Sensor_Add appropriately.
Merge branch 'master' of https://github.com/szmoore/MCTX3420
Done a bunch of changes to image handling