Eliminate use of Reader / Writer

[jdegoes]

Most likely we can improve performance by eliminating read / writer and going directly with inputstream / outputstream or classes baked on these.

[fakirAyoub]

Hi, I'll take this one!

[jdegoes]

@fakirAyoub Awesome. Let me know if you need a hand!

If you look into the implementation of java's Reader / Writer, you can see extraneous copying of bytes, which we can probably eliminate or reduce in our own versions. Of course, the benchmarks will tell the truth here, we should rely on them to see if we can actually improve performance or not.

[fsvehla]

@fakirAyoub How did this go, were you able to make some progress?