Nempy

Fixes bug described in 14 Thanks dehorsley!

Fixes bug described in 13 Thanks dec-heim!

Corrects documentation as per pull request 12 Thanks yueXiao2!

Fix the bug that v1.1.4 was attempting to fix, with not being about to do over-constrained dispatch re-runs without both FCAS and generic constraints.

Additionally, fix a bug with the XMLCacheManager where downloads of XML files would randomly fail, have implemented functionality to re-attempt the download after waiting 100 seconds which appears to work well.

This update fixes a bug where the over-constrained dispatch rerun functionality would fail if both FCAS and generic constraints weren't used.

- Fix issue (6) with AEMO retiring table BIDDAYOFFER_D. Thanks MattAmos for identifying this. The was fix was done by instead sourcing the price bid data from the xml NEMDE input files published by AEMO. An example has been added to the docs to show Nempy working on data from Jan 2022: https://nempy.readthedocs.io/en/latest/examples.html#nempy-performance-on-recent-data-jan-2022

- Fix issue (7) in older data sets from AEMO there was an edge case where no semi scheduled units were providing FCAS and this was causing the input preparation functionality to break. Thanks andrewhn for raising this issue and suggesting a fix (which I've implemented in this release). An example has been added to the docs to show Nempy working on data from Jan 2015, tests haven't been run on any data earlier to this date. https://nempy.readthedocs.io/en/latest/examples.html#nempy-performance-on-older-data-jan-2015

Fix some bugs with testing due updates to pandas and python 3.10

Release for archiving with JOSS publication

Updated version of pytest in dev requirements to >=6.2.5 to support python 3.10

Fixes issue 4 Thanks noah80