HTTP Harpoon: Clandestine HTTP Client.

• Same API as stdlib HttpClient.
• 1 file, 0 dependencies, 300 lines, pure Nim.
• No Curl nor LibCurl dependencies.
• Async and sync client.
• Works with ARC and ORC.
• Works with strictFuncs.
• Uses Uri type for URL.
• Response has isIpv6: bool attribute.
• GET and POST from JSON to JSON directly.
• downloadFile that takes openArray of URLs.
• HTTP Headers can be compile-time immutable const.
• Proxy support, with Auth.
• Timeout support for Async and Sync.
• Option to skip parsing Headers or Status or Body, if you dont need them.
• HTTP Methods use HttpMethod enum, not strings. Status code use HttpCode not integers.
• Share a Socket with multiple clients, reuse Socket.
• Theres no open/close functions for the client, just call get() or post().
• Works with Threads, Tasks, and other Async implementations.
• Uses very few symbols from stdlib, very future proof.
• runnableExamples with doAssert for everything.
• Documentation online.