Implement a Python-requests-based downloader

CONFIG.md

@@ -135,8 +135,13 @@ Choose what software to use to download data throughout Devine where needed.
 Options:
 
 - `aria2c` (default) - https://github.com/aria2/aria2
+- `requests` - https://github.com/psf/requests
 - `saldl` - https://github.com/saldl/saldl
 
+Note that aria2c can reach the highest speeds as it utilizes threading and more connections than the other
+downloaders. However, aria2c can also be one of the more unstable downloaders. It will work one day, then
+not another day. It also does not support HTTP(S) proxies while the other downloaders do.
+
 ## headers (dict)
 
 Case-Insensitive dictionary of headers that all Services begin their Request Session state with.