This commit cleans and modernizes the code base of LIEF.

Among the changes:

- It removes the ``and, or, not`` keywords
- It updates the Documentation
- It moves the internal structures in the ``details::`` namespace

api/python/ELF/objects/pySymbolVersionDefinition.cpp

@@ -38,20 +38,27 @@ template<>
 void create<SymbolVersionDefinition>(py::module& m) {
 
   py::class_<SymbolVersionDefinition, LIEF::Object>(m, "SymbolVersionDefinition",
-      "Class which modelization of an entry defined in ``DT_VERDEF`` (or ``.gnu.version_d``)")
+      "Class which represents an entry defined in ``DT_VERDEF`` or ``.gnu.version_d``")
 
     .def_property("version",
         static_cast<getter_t<uint16_t>>(&SymbolVersionDefinition::version),
         static_cast<setter_t<uint16_t>>(&SymbolVersionDefinition::version),
-        "Version revision. Should holds 1")
+        R"delim(
+        Version revision. Should be 1
+
+        This field should always have the value ``1``. It will be changed
+        if the versioning implementation has to be changed in an incompatible way.
+        )delim")
 
     .def_property("flags",
         static_cast<getter_t<uint16_t>>(&SymbolVersionDefinition::flags),
-        static_cast<setter_t<uint16_t>>(&SymbolVersionDefinition::flags))
+        static_cast<setter_t<uint16_t>>(&SymbolVersionDefinition::flags),
+        "Version information")
 
     .def_property("hash",
         static_cast<getter_t<uint32_t>>(&SymbolVersionDefinition::hash),
-        static_cast<setter_t<uint32_t>>(&SymbolVersionDefinition::hash))
+        static_cast<setter_t<uint32_t>>(&SymbolVersionDefinition::hash),
+        "Hash value of the symbol's name (using ELF hash function)")
 
     .def_property_readonly("auxiliary_symbols",
         static_cast<no_const_getter<it_symbols_version_aux>>(&SymbolVersionDefinition::symbols_aux),