Merge branch 'develop' into release/3.5.4

updated binary build scripts

updated binary build scripts

Merge #125 to release branch

added remark on Windows tests to Changelog

Travis: add Windows environment with Julia

Octave is currently not working in Windows-Travis
Test all precisions and window functions only with gcc

Bugfixes in build scripts

fixed linux build script: julia fastsum, julia/matlab tests before pa…

…ckaging as in windows build script

bump minor so version, fix julia fastsum Makefile, change default arc…

…hitecture to haswell in windows/linux binary build script

fixed missing -O3 in linux build script which caused slow computations