Patch for incomplete NCBI reads

As flagged in issue #120, if the connection to NCBI is interrupted or terminated early an incomplete or corrupted read error is raised. try/except blocks were updated to accept these incomplete read errors, and cazy_webscraper will now re-try the connection until either a successful connection is made, or the number of reattempts is reached (which ever is achieved first).

What's Changed

• Issue 120 ncbi by @HobnobMancer in https://github.com/HobnobMancer/cazy_webscraper/pull/126

Full Changelog: https://github.com/HobnobMancer/cazy_webscraper/compare/v2.3.0.2...v2.3.0.3