Log Message:
Update to 1.123

Upstream changes:
1.123     2016-09-09
        - remove test suite reliance on "." appearing @INC (thanks, \ 
Graham Knop
          and Karen Etheridge!)
        - when an object with stringification overloading fails to match a
          "re" test, its stringification is included in the diagnostics

1.122     2016-09-07
        - added $Test::Deep::LeafWrapper to control the behavior of simple
          values in the "expected" definition; by default, they are \ 
treated as
          shallow($x) tests, but you can now say (for example)
          C<< $Test::Deep::LeafWrapper = \&str >> to always \ 
treat the got value
          as a string, even if blessed, etc.

1.121_001 2016-07-19
        - documentation improvements
        - avoid a few evals, localize $@ in a few places where eval is used
        - good bye tabs, hello spaces