add support for merging cells and adding autofilter to a row
remove data dumper
documentation for merge helper function and added a test demonstrating functionality
support for full autofilter functionality
removed cpan stuff, fix two typos
added autoformat and merge to data format documentation
merge now supports formulas, and adjusted test
modify docs around merge
use row and column numbers instead of range for merge function
fix to docs and removed output from test
fix up the merge and autofilter stuff (#1)