Atom.Module.Base64Url (nuget): A micro-module which provides Base64 for URL encoding/decoding (from RFC 4648).  Feel free to bundle this module with your core library (using any packer, like ILMerge, ILRepack, LibZ, etc.), use micro-assembly as it is, or just take the source code and use it in your project.
Keywords: atom|toolbox|micromodule|base64|base64url