Installation with SPM fails

[yspreen]

New year, new project involving LightBox ;)

Since #250 seems to be fixed now with SPMs new resource integration, and iOS 13 is gaining more adoption anyway, I'd love to use SPM to install the module. However, it currently fails with this error:

Dependencies could not be resolved because root depends on 'Lightbox' 2.5.0..<3.0.0.
'Lightbox' >= 2.5.0 cannot be used because no versions of 'Lightbox' match the requirement 2.5.1..<3.0.0 and package 'lightbox' is required using a stable-version but 'lightbox' depends on an unstable-version package 'imaginary'.

[newbdez33]

using master branch instead of version will solve the problem.