Incompatibility with capistrano 3.x.x

[johnjohndoe]

I noticed that uberspace 0.9.3 is not compatible with capistrano 3.x.x. The new version is completely rewritten. One of the first things I stumbled into is that capify is no longer used but instead cap install.
Therefore, I suggest to restrict capistrano to < 3.0.0. Here is the relevant patch

[bettysteger]

I just did bundle exec capify . and it worked ;)