Log Message:
Update p5-B-Deobfuscate to 0.20.

Changes from previous:
----------------------
0.11:
  - The dictionary may now have words that are shorter than 3 characters
  - Fixed for 5.10
0.12:
  - >-
    Updated the signature cuz the previous version forgot to account
    for the change to META.yml
  - "*foo{CODE} -> defined( &foo ) per the docs."
0.13:
  - uh... broke stuff? The SIGNATURE is bad for META.yml anyway.
  - I forget what else changed
0.14:
  - Shuffled the PGP dictionary around and introduced a floral one
  - Fussing
  - autouse more of YAML
  - autouse Carp
  - Preliminary work for renaming classes & methods
0.15:
  - Removed SIGNATURE
  - Fixed \ in $^X in t/11deparse.t
  - Perl::Critic fussing.
  - Disable broken debugging code.
  - Require latest B::Keywords. Exports were changed.
0.16:
  - Enabled alternate dictionary modules
  - Added -D parameter to ->new
0.17:
  - Removed some dups from Flowers.pm
  - Made this Changes file into YAML for kicks.
0.18:
  - Fixed t/canon.t to be 5.6.x compatible.
  - Quieter B imports.
0.19:
  - Use IPC::Run for tests to hopefully be more cross-platform compatible.
0.20
  - fiddling w/ pause.cpan.org