count:
	- kill -p [DONE]
	- change -o to output file [DONE]
	- make -o required [DONE]
	- add argument:
	  <-e | -p num_hash_bits>
	
query:
	- make -o optional (default to stdout)
	- make -q optional (default to stdin)

inner_prod:
	- remove -a -b [DONE]

list:
	- make -o optional (default to stdout)
	- add a cutoff parameter

new command: merge
   merge <-e | -p num_hash_bits> [-c cutoff] [-n] -o <output.squeakr> <infile1.squeakr> ...

new command: filter
(same as merge, but only one input -- internally just runs merge)

new command: info [DONE]
   info <input.squeakr>
- outputs:
	- kmer size
	- version
	- exactness or num hash bits
	- number of kmers
	- number of distinct kmers
	- cutoff
	- whether counts are present
	- etc?

make squeakrconfig packed [DONE]