fix the Constant cell
fix error msg
Merge pull request #227 from vrabaud/fix_error_msg

fix error msg
Merge pull request #226 from vrabaud/fix_constant_cell

fix the Constant cell
update the docs to the new URLs
Merge pull request #228 from vrabaud/doc_cleaning

update the docs to the new URLs
make sure the Javascript toggle script is copied
Merge pull request #229 from vrabaud/doc_cleaning

make sure the Javascript toggle script is copied
fix the Toggle directive
improve the look of the buttons
remove several RST warnings
Merge pull request #230 from vrabaud/doc_cleaning

Doc cleaning
0.5.4
Merge branch 'release-0.5.4' into develop
add old catkin compatibility
Merge pull request #231 from vrabaud/fix_em

add old catkin compatibility
force overridden methods to be at least classmethod
Merge pull request #232 from vrabaud/fix_bb

force overridden methods to be at least classmethod