Add ElastoDyn blade-node rotational velocity and translational acceleration output

[bjonkman]

Complete this sentence
THIS PULL REQUEST IS READY TO MERGE

Feature or improvement description
Added rotational velocity and translational acceleration to ElastoDyn blade-node output mesh (with help from @jjonkman)

Related issue, if one exists
Fixes #39

Impacted areas of the software
This could have a small effect on models that use AeroDyn15 and ElastoDyn where the two models have nodes that are some distance apart.

[jjonkman]

I worked with Bonnie on this change and approve this pull request.

[andrew-platt]

Is there an OutListParameters.xlsx for ElastoDyn somewhere?

[jjonkman]

As far as I understand, the OutListParameters.xlsx spreadsheet included in the FAST v8.16 archive is the most up-to-date version, but has not yet been migrated to the OpenFAST GitHub repo. This spreadsheet contains tabs for both ElastoDyn and ServoDyn (and copies of the OutList for BeamDyn and AeroDyn v15).

[andrew-platt]

We've split migrated several to GitHub at this point and updated them to reflect recent changes (AeroDyn, AeroDyn14, BeamDyn, InflowWind, OrcaFlex Interface). I think the rest are still in the openfast-library/src/ copy. Could you update that one with the new ElastoDyn channels?

[bjonkman]

Please see this sheet for updated channels: https://github.com/bjonkman/openfast/blob/f/Linear/modules/openfast-library/src/OutListParameters.xlsx. I really want only one version of this spreadsheet with separate tabs for each module. It's super painful to have multiple spreadsheets with the same name.

HOWEVER, this pull request doesn't add WriteOutput values, it merely adds values to the mesh output so that the motions can be transferred correctly to other modules. No change to the spreadsheet is necessary.

[andrew-platt]

Perfect. Thanks for the clarification.