Prepare to release new version 3.0.3

Author: thieu1995

docs/source/pages/general/simple_guide.rst

@@ -26,7 +26,7 @@ Installation
 
 Install the `current PyPI release`_. ::
 
-   $ pip install mealpy==3.0.2
+   $ pip install mealpy==3.0.3
 
 .. _current PyPI release: https://pypi.python.org/pypi/mealpy
 

mealpy/__init__.py

@@ -27,7 +27,7 @@
 # >>> g_best = model.solve(problem)
 # >>> print(f"Best solution: {g_best.solution}, Best fitness: {g_best.target.fitness}")
 
-__version__ = "3.0.2"
+__version__ = "3.0.3"
 
 import sys
 import inspect