Developer revision deprecating redundant functions.
Prepare v0.11_001 dev; prep for XS integration
binsearch_range() now calls binsearch_pos() instead of bsearch_custom_pos() ((deprecated))
Reorganized tests to keep author tests together.  Shifted more tests into "author" status.
Split pure-Perl functions into separate module and arranged for XS loading if available.
Test improvements. Changes listed in "Changes"
Fixed typo in documentation.
Restore Perl 5.6 compatibility for PP version.
Woops, fix a syntax error in PP.pm.
Prepare CPAN dev release 0.11_003
Prepare trial release of v0.12(transitional)