extend LOAD_PATH via environment variable
change ordering of LOAD_PATH
improved JULIA_LOAD_PATH code based on Stefans suggestions
Add some documentation
Shorten code further
when no delimiter is specified, delimiters are taken as one or more adjoining whitespaces.
fixed bug in handling empty columns.
updated tests and docs.
fixes #5391
Deprecate symmetrize! in favor of copytri!
Add pivoting to LU decomposition.
fix #5437
Improved implementation of random number generation within a range
Merge pull request #5425 from tknopp/JULIA_LOAD_PATH

Extend LOAD_PATH via environment variable
Speed up u-/l-cfirst for UTF8
Merge pull request #5427 from JuliaLang/anj/symmetrize

Deprecate symmetrize! in favor of copytri!
Merge pull request #5430 from JuliaLang/anj/lup

Add pivoting to LU decomposition.
Make u-/l-cfirst handle empty strings
Update NEWS.md with generic LU factorization

Also add cross-references.
Merge pull request #5442 from mlubin/spfix

fix sparse() zero handling
Merge pull request #5445 from garborg/master

Update ucfirst, lcfirst
Merge pull request #5403 from tanmaykm/readcsv

Added readdlm option to ignore empty columns.
use isempty(String) instead of length(String)<1

general definition of ucfirst/lcfirst also works for UTF8