Update version to 2.0.0.

--HG--
branch : r2.0.0
Remove deprecated methods.

--HG--
branch : r2.0.0
Remove deprecated methods.

--HG--
branch : r2.0.0
Merge 'org.jenetics-licence_update' branch.

--HG--
branch : r2.0.0
Introduce 'Builder' for creating 'NumberGene' objects.

--HG--
branch : r2.0.0
Introduce 'Builder' for creating 'NumberGene' objects.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Remove deprecated methods.

--HG--
branch : r2.0.0
Update version to 2.0.0.

--HG--
branch : r2.0.0
Some code reformatting.

--HG--
branch : r2.0.0
Some code reformatting.

--HG--
branch : r2.0.0
Improve Javadoc.

--HG--
branch : r2.0.0
Improve Javadoc.

--HG--
branch : r2.0.0
Improve Javadoc.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Update version string to 2.0.0.

--HG--
branch : r2.0.0
Fix Javadoc.

--HG--
branch : r2.0.0