* 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
* Make currentTiddler variable consistent in subfilters and filter run prefixes
* Updated filterun prefix and subfilter operators to use ..currentTiddler instead of outerCurrentTiddler
* Add :sort filter run prefix, docs and tests. Also extended .utils.makeCompareFunction with a flag for caseSensitivity.
* Documentation updates
* Move case sensitivity handling entirely to utils method so it is reusable
Fixes#5246. Now the reduce operator and :reduce filter run prefix will
both return empty output when their input is empty, so that both can be
chained together with the else operator or :else prefix.
Default with no suffix is pre-5.1.23 behavior, escaping all Unicode
characters for maximum compatibility (avoids encoding issues). New
"rawunicode" suffix allows passing through Unicode characters U+0080
and up unchanged, for cases where you know your tools are handling
encoding correctly and you want less verbose escaping.
* Tag trim operator as a string operator
With the new functionality of the trim operator in 5.1.23, it's now a
general-purpose string manipulation tool. So it should be given the
"String operators" tag so that people see it in the same list as
removeprefix and removesuffix, etc.
* Document suffix of trim operator
* Extend toggle operator to support optional second operand to toggle a value pair
* Added tests for extended toggle filter
* Updated docs for toggle operator