restructure and remove deprecated fill_array function
bump version to 3.2.0
stretch: add example and rm asrecarray argument
make test.root the default test file
rm unused import
add rec2array and rec_stack
rec2array and rec_stack unit tests
add dup_idx
typo
docs
rec_stack -> stack
Merge pull request #127 from ndawe/master

[MRG] refactor package structure and add new utility functions