#630 Add in net 5 and make dependency conditional

[thompson-tomo]

Closes #630

Proposed Changes

Adds in net 5 so a dependency can be removed

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• dotnet test completes successfully
• Commit messages are conventional
• Sign CLA (if not already signed)

[bednar]

Hi @thompson-tomo,

Thank you for your PR 👍.

Could you please share the reasoning behind this change? Have you attempted to use ExcludeAssets="All" and then manually add the remaining dependencies to your project?

[thompson-tomo]

No I haven't gone done the path of excluding dependencies & explicitly re-adding them. As I feel Going down the path of simplifying dependencies in the source package is easier to maintain going forward & everyone using a newer target benefits.