[skip ci] Version bump to 0.7.8.

Author: eao197

dev/restinio/version.hpp

@@ -11,7 +11,7 @@
 
 #pragma once
 
-// The current version is 0.7.7
+// The current version is 0.7.8
 //
 /*!
  * The major part of version number.
@@ -33,7 +33,7 @@
  *
  * If RESTinio's version is 0.6.23 then RESTINIO_VERSION_PATCH==23.
  */
-#define RESTINIO_VERSION_PATCH 7ull
+#define RESTINIO_VERSION_PATCH 8ull
 
 /*!
  * Helper macro for make single number representation of RESTinio's version.