added more constructors for v4
changed String to AbstractString for 0.4
streamlining and suggestions per discussion
IPv4(Array) -> Array(IPv4)
switch to map() to preserve concrete type
commenting out IPv4(Vector) -> Vector(IPv4) until a decision can be made
turn on colored output for Pkg.test()
add graphemes(s) function to iterate over graphemes (represented by substrings) of a string s
REPL: passthru ctrl-arrow keys
Turn on colored output for Pkg.test() if Base.have_color is true
Merge pull request #9388 from JuliaLang/rf/repl-ctrl-arrow

REPL: passthru ctrl-arrow keys
Merge pull request #9374 from JuliaLang/jcb/testcolor

Turn on colored output for Pkg.test()
Correct .rst on sysimg

Added needed newline.
Merge pull request #9261 from stevengj/graphemes

add graphemes(s) function to iterate over string graphemes
Implement arithmetic, `min`, and `max` on cartesian indexes

These allow many more algorithms to be written
fix compiler warning on win32
Merge pull request #9394 from brk00/patch-1

Correct .rst on sysimg
Merge pull request #9287 from JuliaLang/teh/cartesianarithmetic

Implement arithmetic and `min` on cartesian indexes
Update socket.jl

Removed the comments since pending decision has apparently been made :)
Merge pull request #9346 from sbromberger/v4-constructors

V4 constructors (take 2)