SIGPIPE not supported on windows about arweave-python-client

[gcbsumid]

Python version: 3.7.9
Unity Version: 2020.3.12f1
OS: Windows 10

To repro the bug, you can attempt to upload file using the get_upload() from transaction_uploader.py on Windows. Though I did not try uploading a small file, I assume it would hit the same issue. After installing the python arweave client, the following is good enough to repro the issue:

`
from arweave.arweave_lib import Wallet, Transaction
from arweave.transaction_uploader import get_uploader

wallet = Wallet(jwk_file)

with open("my_mahoosive_file.dat", "rb", buffering=0) as file_handler:
tx = Transaction(wallet, file_handler=file_handler, file_path="/some/path/my_mahoosive_file.dat")
tx.add_tag('Content-Type', 'application/dat')
tx.sign()

uploader = get_uploader(tx, file_handler)

while not uploader.is_complete:
    uploader.upload_chunk()

    logger.info("{}% complete, {}/{}".format(
        uploader.pct_complete, uploader.uploaded_chunks, uploader.total_chunks
    ))

`

I've also created a PR, as requested. Please review when possible.

[MikeHibbert]

Ideally you could describe how to reproduce the bug and exactly where it is you've inserted this code?

Even better would be if you created a branch and submitted a pull request that we could integrate with our code quickly and you would gain contributor status too!

[MikeHibbert]

Thanks for the help and the PR, I've merged it in