using opencv2 instead of libopencv-dev for hydro version (should not be merged into indigo)
downgrade version for hydro
update changelog
0.5.10
Merge pull request #35 from ipa320/hydro_release_candidate

Hydro release candidate
Merge pull request #36 from ipa320/hydro_dev

updates from hydro_dev
increase version number for indigo
Update package.xml
Update package.xml
add tinyxml to package.xml