Add Flynt to linter for updating format strings

This will convert format strings to f strings when possible

.pre-commit-config.yaml

@@ -15,6 +15,14 @@ repos:
     hooks:
       - id: isort
 
+  # Can run individually with `flynt [file]` or `flynt [source]`
+  - repo: https://github.com/ikamensh/flynt
+    rev: '0.78'
+    hooks:
+      - id: flynt
+        args: ["--fail-on-change", "--verbose"]
+        require_serial: true
+
   # Can run individually with `pre-commit run flake8 --all-files`
   # Need to use flake8 GitHub mirror due to CentOS git issue with GitLab
   # https://github.com/pre-commit/pre-commit/issues/1206

deploy/conda-dev-spec.template

@@ -45,6 +45,7 @@ types-requests
 pip
 pytest
 isort
+flynt
 flake8
 mypy
 pre-commit

docs/developers_guide/quick_start.md

@@ -527,8 +527,9 @@ a tools that helps to enforce this standard by checking your code each time you
 make a commit.  It will tell you about various types of problems it finds.
 Internally, it uses [flake8](https://flake8.pycqa.org/en/latest/) to check PEP8 
 compliance, [isort](https://pycqa.github.io/isort/) to sort, check and format 
-imports, and [mypy](https://mypy-lang.org/) to check for consistent variable
-types. An example error might be:
+imports, [flynt](https://github.com/ikamensh/flynt) to change any format 
+strings to f-strings, and [mypy](https://mypy-lang.org/) to check for 
+consistent variable types. An example error might be:
 
 ```bash
 example.py:77:1: E302 expected 2 blank lines, found 1