Update UnitSymbol to switch method. Refactor Converts to Internal - #181

Update UnitSymbol to switch method. Refactor Converts to Internal#181

peterjamesnugent merged 5 commits into

developBHoM/Localisation_Toolkit:developfrom

Units_Engine-#180-add-unitsymbol-and-refactor-convert-methods-to-internal-for-accessBHoM/Localisation_Toolkit:Units_Engine-#180-add-unitsymbol-and-refactor-convert-methods-to-internal-for-accessCopy head branch name to clipboard