Read/write compressed files in julia 0.7

I’ve written extensive code in julia 0.6.3 using GZip to read and write compressed files.
julia 0.7 doesn’t understand GZip. What am I doing wrong?

I don’t understand what you mean here. Please provide a self-contained example.

I guess you need to install GZip.jl again on Julia 0.7 because Julia 0.6 and 0.7 use separated package systems.

Folks - Thanks for your guidance. Here’s what worked. Install CodecZlib first.
using CodecZlib
data = fill(“”,15582341)
i = 0
stream = open(“W(18)_1_181024.saw.gz”) #open named file as an I/O stream
for line in eachline(GzipDecompressorStream(stream))
global i += 1
data[i] = line
end # then, e.g., println(data[1]). Am I restricted to 9 lines for reply???