Nelson 0.1.5 build

0.1.5 alpha (2017-04-17)

Features:

Optimize constructors allocation for eye, ones, Inf, NaN, rand, randn functions.

Add 'issymmetric' function.

Add 'svd' function.

Add 'rcond' function.

Bug Fixes:

#41: test_makeref starts a new clear session to create a ref file.

#39: inv([0 0;i() 3]) did not return [Inf, Inf; Inf, Inf] on ARM platform.

#25: ndims added.

#24: isnan & isinf added.