* First test version
* indexBy0, indexBy1, indexBy2, indexBy3, indexBy4 added.
* indexBy4 selected as optimal. Performances:
* <function indexBy0 at 0xf6e500> 0.00283553865387
* <function indexBy2 at 0xf6e6e0> 0.00355636643664
* <function indexBy3 at 0xf6e758> 0.0116692264226
* <function indexBy4 at 0xf6e5f0> 0.00204977947795
* meta functions
* Added:
* future: raises an exception when a planned function is called.
* Planned:
* validate
* Manipulation functions
* Added:
* histo: turns a dex into a histogram (dictionary with number values)
* summary: performs histo on each possible key
* Planned:
* tag
* transformAllTo
* Hello and Goodbye functions
* Planned:
* pickle_load, pickle_dump
* dump_csv
* load_json, dump_json
* Added:
* load_csv: turns a csv into a free table