Resolve the pandas deprecations listed in issue #314.
Checklist
[x] I tested my contribution locally and it seems to work fine.
[x] Code and workflow changes are sufficiently documented.
[ ] Newly introduced dependencies are added to envs/environment.yaml and envs/environment.docs.yaml.
[ ] Changes in configuration options are added in all of config.default.yaml, config.tutorial.yaml, and test/config.test1.yaml.
[ ] Changes in configuration options are also documented in doc/configtables/*.csv and line references are adjusted in doc/configuration.rst and doc/tutorial.rst.
[ ] A note for the release notes doc/release_notes.rst is amended in the format of previous release notes, including reference to the requested PR.
Closes # (if applicable).
Closes issue #314
Changes proposed in this Pull Request
Resolve the pandas deprecations listed in issue #314.
Checklist
envs/environment.yamlandenvs/environment.docs.yaml.config.default.yaml,config.tutorial.yaml, andtest/config.test1.yaml.doc/configtables/*.csvand line references are adjusted indoc/configuration.rstanddoc/tutorial.rst.doc/release_notes.rstis amended in the format of previous release notes, including reference to the requested PR.