Rename TawashiException to just Exception.

It's in tawashi namespace already.

src/tawashi/cgi_env.cpp

@@ -130,7 +130,7 @@ namespace cgi {
 				std::string err_msg = "Parsing failed at position " +
 					std::to_string(parsed_chars) + " for input \"" +
 					content_type + "\"";
-				throw TawashiException(ErrorReasons::InvalidContentType, boost::string_view(err_msg));
+				throw Exception(ErrorReasons::InvalidContentType, boost::string_view(err_msg));
 			}
 		}
 	}

src/tawashi/cgi_post.cpp

@@ -33,7 +33,7 @@
 
 namespace tawashi {
 	UnsupportedContentTypeException::UnsupportedContentTypeException (const boost::string_view& parMessage) :
-		TawashiException(ErrorReasons::UnsupportedContentType, parMessage)
+		Exception(ErrorReasons::UnsupportedContentType, parMessage)
 	{
 	}
 

src/tawashi/cgi_post.hpp

@@ -24,7 +24,7 @@
 #include <cstddef>
 
 namespace tawashi {
-	class UnsupportedContentTypeException : public TawashiException {
+	class UnsupportedContentTypeException : public Exception {
 	public:
 		explicit UnsupportedContentTypeException (const boost::string_view& parMessage);
 	};

src/tawashi/tawashi_exception.cpp

@@ -27,11 +27,11 @@ namespace tawashi {
 		}
 	} //unnamed namespace
 
-	TawashiException::TawashiException (ErrorReasons parReason, const boost::string_view& parMessage) :
+	Exception::Exception (ErrorReasons parReason, const boost::string_view& parMessage) :
 		std::runtime_error(compose_err_message(parReason, parMessage)),
 		m_reason(parReason)
 	{
 	}
 
-	TawashiException::~TawashiException() noexcept = default;
+	Exception::~Exception() noexcept = default;
 } //namespace tawashi

src/tawashi/tawashi_exception.hpp

@@ -22,10 +22,10 @@
 #include <boost/utility/string_view.hpp>
 
 namespace tawashi {
-	class TawashiException : public std::runtime_error {
+	class Exception : public std::runtime_error {
 	public:
-		TawashiException (ErrorReasons parReason, const boost::string_view& parMessage);
-		~TawashiException() noexcept;
+		Exception (ErrorReasons parReason, const boost::string_view& parMessage);
+		~Exception() noexcept;
 
 		ErrorReasons reason() const { return m_reason; }