Changes for version 0.04
- Reduced dependency on Perl to 5.10.0 (instead of 5.14.0). Seems to pass fine with this older Perl.
- Fixed problem if hash would be filled with ID values not matching the offset / increment given at creation. This may happen if a hash is filled from a database that has ID's merged with several different offsets.
convert strings to ID's authoritatively and vice-versa
pure Perl implementation of String::Lookup