Added spreadsheet object to Automation3 API

Added MJ/h to heat flow units (#675)

Updated IronPython version to v3.4.1

Fixed Cantera Interop sample

Fixed Biodiesel Combustion (Cantera) sample

Fixed issue with Sensitivity Analysis utility (Classic UI) (#684)

Fixed issue with Optimization utility (Classic UI) (#688)

Fixed enthalpy and entropy calculation for Seawater Property Package (#682)

Fixed Pipe Segment external diameter calculation

Fixed issue with loading reaction sets for internal flowsheets in Flowsheet UO

Fixed issue with CAPE-OPEN Property Package equilibrium calculations

Missing compound parameter warnings are now optional