Sebastian Bejga

I updated recently to 0.3.0 and since then it is crashing when starting to watchbuild: ``` /Library/Ruby/Gems/2.3.0/gems/fastlane-2.81.0/fastlane_core/lib/fastlane_core/configuration/config_item.rb:85:in `initialize': unknown keyword: default_value_dynamic (ArgumentError) from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/lib/watchbuild/options.rb:23:in `new' from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/lib/watchbuild/options.rb:23:in `available_options' from /Library/Ruby/Gems/2.3.0/gems/watchbuild-0.3.0/bin/watchbuild:26:in...