Mention common cases in issue template

Author: brandonwillard

.github/ISSUE_TEMPLATE.md

@@ -1,11 +1,20 @@
 ## Description of your problem or feature request
 
-**Please provide a minimal, self-contained, and reproducible example.**
+First, carefully read the following to determine whether or not you have a valid Aesara issue:
+
+- Does your issue only arise in a library that uses Aesara (e.g. PyMC)?  If so, submit your issue to that library's issue tracker.  From there, the Aesara-specific details can be worked out and a valid Aesara issue can be identified.  **Issues framed primarily in third-party libraries are liable to being marked as invalid and closed.**
+- Does your issue involve OS and/or environment-specific settings (e.g. installation and/or compilation issues)?  If so, create a [Discussion](https://github.com/aesara-devs/aesara/discussions) instead.  From there, we can help determine whether or not the issue is due to faulty logic in Aesara (i.e. a valid issue) or something specific to your local setup.
+
+
+If the above does not apply, and you have an issue or feature request that's specific to Aesara, provide a minimal, self-contained, and reproducible example (i.e. an [MWE](https://en.wikipedia.org/wiki/Minimal_reproducible_example)):
+
 ```python
 [Your code here]
 ```
 
-**Please provide the full traceback of any errors.**
+**Please provide the full tracebacks for any relevant errors and/or warning messages.**
+
+
 ```python
 [The error output here]
 ```
@@ -16,7 +25,12 @@
 ## Versions and main components
 
 * Aesara version:
-* Aesara config (`python -c "import aesara; print(aesara.config)"`)
 * Python version:
 * Operating system:
 * How did you install Aesara: (conda/pip)
+
+<details> <summary> Aesara config: </summary>
+
+Place the results of `python -c "import aesara; print(aesara.config)"` here.
+
+</details>