Upgrade to .NetStandard2.0

[FraserGreenroyd]

Fixes #59

[FraserGreenroyd]

@BHoMBot check project-compliance

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check project-compliance

There are 4 requests in the queue ahead of you.

[bhombot-ci]

@FraserGreenroyd fix requested for project compliance.

The errors with the CSProject (.csproj) files have been recorded as annotations on the checks tab.

I will apply the fixes to every case detailed on the checks tab with the exception of any references to the target framework. I am unable to provide fixes to the Target Framework automatically, these will need to be performed manually. If you want to perform the fixes in a different manner please resolve this manually and rerun the check.

If you are happy for me to go ahead and perform this action, please reply with:

@BHoMBot fix project file ref. 12019286319

[FraserGreenroyd]

@BHoMBot fix project file ref. 12019286319

[bhombot-ci]

@FraserGreenroyd I have queued up your request to fix the csproj file(s). There are 0 requests in the queue ahead of you.

[bhombot-ci]

@FraserGreenroyd I am now going to fix the project compliance in accordance with the annotations previously made.

[bhombot-ci]

@FraserGreenroyd to confirm I have now resolved the project compliance issues and pushed a commit to this Pull Request.

[FraserGreenroyd]

@BHoMBot check compliance
@BHoMBot check required

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check code-compliance
• check documentation-compliance
• check project-compliance
• check branch-compliance
• check dataset-compliance
• check copyright-compliance
• check code-compliance
• check documentation-compliance
• check project-compliance
• check core
• check null-handling
• check serialisation
• check versioning
• check installer

[bhombot-ci]

The check code-compliance has already been run previously and recorded as a successful check. This check has not been run again at this time.

[bhombot-ci]

The check documentation-compliance has already been run previously and recorded as a successful check. This check has not been run again at this time.

[bhombot-ci]

The check project-compliance has already been run previously and recorded as a successful check. This check has not been run again at this time.

[adecler]

• Code still compiles and copies the dlls across
• The toolkit still works in GH ( based on the limited testing I have done)

[FraserGreenroyd]

@BHoMBot check ready-to-merge

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check ready-to-merge