0.3.1

• Remove speed from proxy (no need to)
• Extract proxy validation from the HTTPClient to separate class
• Make proxy validator configurable
• Refactor proxy validation behavior
• Refactor Proxy object (OpenStruct => PORO, url / uri methods, etc)
• Optimize proxy list check with threads
• Improve proxy_fetcher bin

0.3.0

• Proxy providers refactoring
• Proxy object refactoring
• Specs refactoring
• New providers
• Custom HTTP client
• Configuration improvements
• Proxy filters