Added Megajoule Unit of Measure

nuspec cleanup

Missed merge for 3.0 release

Removing build target for .Net 4.5.1
Fixing units of measure for yield representations.
Adding quintal (q) to Unit of Measure system.
Fixing DDI mappings for yield representations.

Addition of Adjuvant and Defoliant as Product Categories

Defaulting Guidance Patterns to correct types

Defaulting ProductForm properties

Adding DDI mappings for product mix quantity representations

Moved DataLogTriggers to WorkItem and marked prior location obsolete.
Allowing for multiple logging methods within DataLogTrigger.
Added DataLogTrigger.RequestDefaultProcessData to support requesting the default set of process data variables from an ISO11783-compliant Task Controller.
Moved Prescription OutOfFieldRate and LossOfGpsRate to RxProductLookup to support default rates per product. Marked prior location obsolete.

Fixing issue with the UnitSystem introduced in 2.7.0