Changes for Perl extension Perl-Metrics2
0.06 Fri  7 Aug 2009
        - Added missing File::Find::Rule::Perl dependency
0.05 Tue  4 Aug 2009
        - A variety of more efficient indexes and index generators.
        - Make the main document loop find documents in real-time rather
          than pre-build a list of them. Saves even more memory.
        - Strip most of the speed monitoring code, it needed the pre-baked
          file list to work.
        - Move the study index from the plugins to the core
        - Pass-through md5 through several methods to prevent one instance
          of it having to be regenerated.
0.04 Mon  3 Aug 2009
        - Implenting indexable tracking
        - Prevent duplicate work in core plugin
        - Plugins not advertise destruction
        - Allow the last destructive plugin to destroy the original
          document, to prevent excessive cloning.
        - Improved runtime estimation based on file-size throughput of
          the cache .ppi storables. Per-file estimation was pointless
          when running files smallest to largest.
0.03 Sun 10 May 2009
        - Adding source lines of code metric to the core
        - Adding integration with PPI::Cache
        - Added process_cache to do metric rescanning directly from the cache
        - Added manual index drop and restore
        - Streamlined metric insert statements within a single prepare
        - Added pm2minicpan to index and cache a local minicpan
        - Added pm2db for access to minor database cleaning operations
        - Added pm2precache and pm2preparse
        - Added Perl::Metrics2::Parse to move the PPI parsing into a subprocess
0.02 Sun 10 May 2009
        - Adding the CpanFile table
0.01 Mon 16 Feb 2009
        - Creating initial revision