Log Message:
p5-autobox: update to 3.0.1.

3.0.1 Sat 5 May 20:50:14 2018

    - GH #11: fix version declaration on 5.8 (thanks, Grinnz)

3.0.0 Sat 5 May 18:10:16 2018

    - breaking change:
        - the behaviour of UNIVERSAL methods like $native->can and
          $native->isa is now defined as being the same as when autobox
          is not enabled rather than "undefined". (technically, this
          still falls under the rubric of "undefined", but the switch
          from "don't know" to "don't" could break buggy \ 
code, so bump
          for safety)
        - add DOES to the list of non-autoboxed methods
    - switch to SemVer i.e. 2.86 (v2.860.0) -> 3.0.0 (v3.0.0)
    - upgrade ppport.h from 3.35 -> 3.42