Log Message:
py-guppy3: update to 3.0.8

Change log:

   Version 3.0.8

2019-10-07  YiFei Zhu  <zhuyifei1999@gmail.com>

    * Nothing changed, just releasing 3.0.8

2019-10-03  YiFei Zhu  <zhuyifei1999@gmail.com>

    * RefPat.py: Add missing comma in string list [Ehsan Kia]

2019-10-02  YiFei Zhu  <zhuyifei1999@gmail.com>

    * Don't cache Interface attributes because of invalidation is too painful,
      and it barely makes a difference.

2019-09-26  YiFei Zhu  <zhuyifei1999@gmail.com>

    * Unreachable code cleanup
    * Use a temporary root object for traversal in initialization, to reduce
      its performance penalty

2019-09-25  YiFei Zhu  <zhuyifei1999@gmail.com>

    * Fix get_partition memoization
    * Create FastPartition for reusing the already-computed partition
      information after selecting from a single partition.
    * Fix segfault in Horizon deallocation

2019-09-22  YiFei Zhu  <zhuyifei1999@gmail.com>

    * Unreachable code cleanup
    * Python 3 fixes RE.py and RE_Rect.py