Add incompatible log for dependency pick list

[edclements]

With interactive set to true the user is presented with a prompt to specify a dependency when incompatibilities are found. This change logs the possible choices before the prompt.

[codecov-io]

Current coverage is 73.68% (diff: 11.11%)

Merging #57 into master will decrease coverage by 23.25%

@@             master        #57   diff @@
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  Files             1          1          
  Lines            98        133    +35   
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
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+ Hits             95         98     +3   
- Misses            3         35    +32   
  Partials          0          0          

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[Crevil]

I think this is good! Could you add some tests as well?