Refactor Header into its own object to cleanup some of the more convoluted configuration logic
Add support for extracting specs from hive tables and performing spec <-> header conversions
Split up record-based and vector-based inputs into separate parameter classes
Add support for returning the Specs of Records files
Get the Hive summary and sample stuff working
Add the show command for printing vectors to the commandline
Add a command for extracting a header by parsing a hive table
Rename show to showvec
Update javadoc