Merge pull request restsharp#733 from restsharp/work_in_progress

new nuget targets and other cleanup

published a new nuget version

updated the nuget package

Merge branch 'master' of https://github.com/restsharp/RestSharp

Conflicts:
	.nuget/RestSharp.Build.dll

Updated version number

Merge pull request restsharp#577 from hallem/Nuget_1045

Nuget Release for v.104.5.0

v104.4.0

Add Meta solution folder

RestSharp 104.2

Version 103.1