I would like to update the mobility gem.
Are there any known issues/needed steps when updating from v0.1.10 to v0.3.6 or can it be updated without any further steps needed?
There are no major breaking changes between v0.1 and v0.3. You should be able to update right up to v0.4 (recently released), but of course it's always best to have a set of specs testing your application when upgrading any gem.