WIP

test_base
test_advanced
That's a big update !
More support
Fix dict error
Fix None implem
Fix decltype with invert operator
Add missing str.find
GCC compliant implementation of the inv operator
Merge inv and invert code
Fix a few stuff + indexed_ndarray
Add forgotten const qualifier ....
Add some missing functions that were not tested
fix issue in indexed_array constructor (bad type forwarding leading to deep copy)

* cause bad nditerator behaviour as end() doesn't reference the same array than begin()
more tests

+ remove g++4.8 workaround
Fix capitalization
What is the difference???
Fix nditerator issues
Fix a vicious bug in nditerator
Update module table and tests

test some functions that were never tested
prune functions that were never implemented
Finish rebase against master