update conanfiles and add RocksDB

elfio/conanfile.py

@@ -3,7 +3,7 @@ from conans import ConanFile, CMake, tools
 
 class ElfioConan(ConanFile):
     name = "elfio"
-    version = "1.3.2"
+    version = "3.4"
     license = "MIT License"
     url = "http://git.code.sf.net/p/elfio/code"
     description = "ELFIO is a header-only C++ library intended for reading and generating files in the ELF binary format"