v0.4.1

This is a small update that improves pipe I/O speeds and CPU usage, especially on Linux and macOS.

• Add detect dependency, and use it to detect platforms
• Unix-like systems will use shell I/O redirection
• Other systems will use iterators over stdin instead of explicitly iterating over input with slow Python for-loops

You can install this like so:

python3 -m pip install onhold==0.4.1