Fix for issue #16936 - CSS strings containing ASP.NET replacement blocks that contain the same delimiter character(s) as the CSS string cause the CSS parser to barf. Need to use the -aspnet:1 flag to treat the ASP.NET blocks as single entities.
Added support for CSS3 @keyframes syntax.
Added NuGet package support to the DLL project.
Expand the -line switch to also optionally specify the multiline/single line mode, and the spaces-per-tab for multiline mode.
Also updated the NuGet package at nuget.org.