in_place_ policy is  tied to linalg
nt2/options.hpp is now automatically aggregated
Cleared out gammainc related options

Those options where actually internal only
Reworked and completed freqspace
Move tags to sdk instead of placeholders
additional digits (taken from matlab) added to reference answer in mnorm test because of test failure in double precision
gather_avx unit test moved to gather.cpp in the main repo
Fix #783 - Narrowing in storage_size settings

storage_settings of dynamic size was set to -1, leading to a
narrowing error in C++11. As this default value is purely
informative, it has been set to 0ULL instead. Associated
assertion has been modified to comply with this new semantic.
Moreover, unit tests were amended to compare to 0ULL instead of -1.
warning fix in mnorm + fix precision threshold in orth test
adapt ulp threshold in gelsy unit test
use absolute difference to compute precision in sne unit test
reduce tested accuracy of sne in test
Merge pull request #785 from MetaScale/sne_absdiff

Use absolute difference to test accuracy of sne instead of ulps
is_complex works for const also
correct sne error for mini-titan
fix warning in null unit test
fix typo in documentation
add 'ignore' options to gather_includes for options.hpp, just in case we ever decide to have a nt2/details directory
Merge pull request #780 from MetaScale/765_unify_options_file

Make options a gathered file
correction for the corner cases of round presented for the boost version
of round by robin eckert.

We suffer the same as round in simd common is quite trunc(x+Half). In scalar we use when available ::round and ::roundf that work
properly, but the code is not correct if they are not available.
The commit present a version that apparently correct the two flaws noted by roin eckert,but the code is not the same as in its
proposal as I tried it and it didnot work as 1-prev(0.5) is equal to 0.5.