add support for leonardo and due
De-registration of subscribers and service clients.

This prevents callbacks to be called even when a client program
terminates a connection.
Merge pull request #69 from PaulBouchier/hydro-devel

Merge rosserial_server from Mike Purvis and alignment fix from Lorenzo Riano after local merge and test
Merge pull request #64 from ros-drivers/leonardo_due_support

add support for leonardo and due
Merge pull request #68 from lorenzoriano/fix-unsubscribed-topics

De-registration of subscribers and service clients.
Merge pull request #71 from PaulBouchier/hydro-devel

Merge node_handle initialization code, fix some compiler warnings
Merge pull request #72 from PaulBouchier/hydro-devel

Check in Lorenzo's init & return value fixes
Update changelogs
Tagged changelogs
0.5.3