* $let widget added and tested
* Documentation for $let, doc improvements for $vars
* let properly avoids refreshing when possible
* $let Changes as recommended by others
* Removed superfluous super method call
Also improved $let test
* Extends :map filter run prefix to provide the variables index, revIndex and length to bring it into line with :reduce
* update :maps examples
* docs: fix formatting issue with documentation
* feat: provide actionValue variable to actions fired by EditTextWidget
* also extend CodeMirror engine to set actionValue variable when invoking actions
* Add action-setmultiplefields and setmultiplevariables, and extend action-sendmessage
* Add getfield operator
* Remove getfield operator
See discussion at https://github.com/Jermolene/TiddlyWiki5/pull/6130#issuecomment-949911439
* Add docs
* Adjust whitespace
* Add support for assigning multiple indexes to action-setmultiplefields
* Make filter operator examples easily editable
* Add 'Reset' button to filter operator examples
* Only display the reset button when filter has changed
* Introduce '.doc-example input' class rather than re-use tc-advanced-search to make input wider
* Grab focus for the filter text box
* Fix firefox ctrl-z/undo issue by replacing list widget with filter transclusion
* Replace spaced indent with tabs to make it consistent with the other code
* Added missing trigonometrics filter operators
This PR adds support to trigonometry operators, allowing to create spider graphs and other geometric shapes with filters.
* Adds the missing trigonometric filter operators
This PR adds support to the missing trigonometric filter operators (cos, sin, tan, acos, asin, atan, atan2), allowing to create spider graphs, [pie charts, donut charts, polar charts](https://ffoodd.github.io/chaarts/pie-charts.html) and other geometric shapes with filters, which was previously not possible without add-ons.
Example :
`[[2]cos[]] = -0.4161468365471424`
See also this radar chart made in wikitext by @saqimtiaz using the new trigonometric operators :
https://saqimtiaz.github.io/sq-tw/temp/radar-chart-demo.html
* Add documentation for the Trigonometric Operators
Accompanies code changes #6127
* Fix formatting of atan2 Operator.tid
Removed two empty lines at the end of the tiddler
* Add examples for the trigonometric operators
Accompanies code changes Jermolene#6127
* Fix version in the doc for trigonometric operators
This PR fix the content of the documentation tiddlers regarding trigonometric operators (#6131).
<<.from-version "5.1.20">> was changed to <<.from-version "5.1.21">>
* Fix formatting of atan2 Operator.tid
Removed two empty lines at the end of the tiddler
This version of the project is not maintained. I've noted this and added a link to Arlen Beiler's community reference. I suppose it could be deleted entirely, but might be useful for historical purposes?
* Plugins tab in control panel display tabs using filter instead of hard coded list
* Update ControlPanelPlugins.tid
The two entries `[[$:/core/ui/ControlPanel/Plugins/Installed]] [[$:/core/ui/ControlPanel/Plugins/Add]]` were removed from list filed as per @Jermelon confirmation!
* Create SystemTag_ $__tags_ControlPanel_Plugins.tid
Update the SystemTags documentation tiddler
