Added functions for conversion between numeric representations.
Changed to use the prelude's conversion function realToFrac.
Added missing import.
Merge latest from bjornbm/master.
Naming changes.
Hide dmap when importing the prelude.
Added thermal quantities.
Added link to source.
Merge pull request #31 from dmcclean/thermal-resistance

Thermal resistance
Merge pull request #24 from dmcclean/convert

Add conversion functions