Math by GravityView 2.4.1

* Fixed: PHP fatal error when the plugin is used without GravityView
* Added: Footer calculations for Custom Content fields

* Added: Easily add footer calculations to your GravityView Table and DataTables layouts! [Learn how to add calculations](https://docs.gravityview.co/article/750-how-to-add-field-calculations-to-the-table-footer).
- Effortlessly calculate field values
- Quiz: # Passed, # Failed, % Passed, % Failed, Average Score
- High, low, average, sum, checked
- Count of checked and unchecked checkboxes, radio inputs, consent fields
- Time duration: Fastest, slowest, average time
* Added: Perform duration calculations, great for races and time sheets! [See a video for setting up duration calculations](https://docs.gravityview.co/article/756-gravity-forms-duration-calculations).
* Added: Filter support for `scope="visible"`. [Read more about filters](https://docs.gravityview.co/article/295-math-shortcode#filters).
* Added: An `{entry_count}` Merge Tag you can use inside math formula as well as throughout Gravity Forms and GravityView! [Read about the `{entry_count}` Merge Tag](https://docs.gravityview.co/article/754-entry-count-merge-tag)
* Improved: Execution time when a Math filter is used on large data sets
* Fixed: Incorrect results returned by `min`/`max`/`avg`/`sum` operations
* Fixed: Calculations on non-numeric fields (e.g., product price) would not work in View widget areas
* Fixed: Incorrect results returned by `min`/`max`/`avg`/`sum` operations
* Fixed: Only using one page of results were used when calculating `scope="view"`
* Logging improvements!
* New: Not sure why your Math formula isn't working, but you don't want to modify the shortcode? Administrators can now debug Math formulae from the front-end by adding `?gv_math_debug=true` to the URL.
* Added: Better debugging information is now shown, including the contents of the formula before and after it was processed.
* Improved: Notices are now grouped for each shortcode, making it easy to debug.
* Fixed: "Additional info" shown when debugging results not displaying when clicked.
* Fixed: Math by GravityView wasn't showing in the [Gravity Forms "Logging" screen](https://docs.gravityforms.com/logging-and-debugging/#viewing-logs).
* Fixed: Display user notices only when `notices` shortcode attribute is set.

Fixed: If using scope=form as well as a filter, only the first 20 entries in the form were used in calculations