Use \mlsversion in abstract

chapters/abstract.tex

@@ -8,7 +8,7 @@
 This document defines the Modelica\footnote{%
 Modelica is a registered trademark of the Modelica Association
 }
-language, version 3.5, which is developed by the Modelica Association, a non-profit organization with seat in Linköping, Sweden.
+language, version~\mlsversion, which is developed by the Modelica Association, a non-profit organization with seat in Linköping, Sweden.
 Modelica is a freely available, object-oriented language for modeling of large, complex, and heterogeneous systems.
 It is suited for multi-domain modeling, for example, mechatronic models in robotics, automotive and aerospace applications involving mechanical, electrical, hydraulic control and state machine subsystems, process oriented applications and generation and distribution of electric power.
 Models in Modelica are mathematically described by differential, algebraic and discrete equations.