Untabify
use jenkins instead of travis
limit the size of lists in Enum.cartesian_product's tests
slow cartesian_product qtests considered harmful
more tests for BitSet
qtest for digest
tests for enum (one of them failing)
bugfix in Enum.clamp
fix doc of Enum.merge
another update to the doc of Enum.merge
many tests for DynArray
many tests for Enum
a few tests for heap
Merge pull request #517 from c-cube/moar-tests

More tests
Merge pull request #510 from Fourchaux/master

Untabify
proposal for init_until_exc code and doc
Add BatStream.concat_map .
Inline concat_map.
renamed to unfold_exc and added unit tests
Merge pull request #523 from UnixJunkie/batlist_init_until_exception

proposal for init_until_exc code and doc