Re-implement ASC function and add unit tests

.gitattributes

@@ -1,20 +1,3 @@
-*.min.js binary
-/.editorconfig export-ignore
-/.gitattributes export-ignore
-/.github export-ignore
-/.gitignore export-ignore
-/.php-cs-fixer.dist.php export-ignore
-/.phpcs.xml.dist export-ignore
-/.readthedocs.yaml export-ignore
-/.scrutinizer.yml export-ignore
-/CHANGELOG.PHPExcel.md export-ignore
-/bin export-ignore
-/composer.lock export-ignore
-/docs export-ignore
-/infra export-ignore
-/mkdocs.yml export-ignore
-/phpstan-baseline.neon export-ignore
-/phpstan.neon.dist export-ignore
-/phpunit.xml.dist export-ignore
-/samples export-ignore
 /tests export-ignore
+README.md export-ignore
+*.min.js binary

.github/ISSUE_TEMPLATE.md

@@ -14,7 +14,7 @@ This is:
 
 ### What are the steps to reproduce?
 
-Please provide a [Minimal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve) of code that exhibits the issue without relying on an external Excel file or a web server:
+Please provide a [Minimal, Complete, and Verifiable example](http://stackoverflow.com/help/mcve) of code that exhibits the issue without relying on an external Excel file or a web server:
 
 ```php
 <?php
@@ -26,20 +26,6 @@ $spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();
 
 // add code that show the issue here...
 ```
-If this is an issue with reading a specific spreadsheet file, then it may be appropriate to provide a sample file that demonstrates the problem; but please keep it as small as possible, and sanitize any confidential information before uploading.
-
-### What features do you think are causing the issue
-
-- [ ] Reader
-- [ ] Writer
-- [ ] Styles
-- [ ] Data Validations
-- [ ] Formula Calculations
-- [ ] Charts
-- [ ] AutoFilter
-- [ ] Form Elements
-
-### Does an issue affect all spreadsheet file formats? If not, which formats are affected?
 
 
 ### Which versions of PhpSpreadsheet and PHP are affected?

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,21 +1,16 @@
 This is:
 
+```
 - [ ] a bugfix
 - [ ] a new feature
-- [ ] refactoring
-- [ ] additional unit tests
+```
 
 Checklist:
 
 - [ ] Changes are covered by unit tests
-  - [ ] Changes are covered by existing unit tests
-  - [ ] New unit tests have been added
 - [ ] Code style is respected
 - [ ] Commit message explains **why** the change is made (see https://github.com/erlang/otp/wiki/Writing-good-commit-messages)
-- [ ] CHANGELOG.md contains a short summary of the change and a link to the pull request if applicable
+- [ ] CHANGELOG.md contains a short summary of the change
 - [ ] Documentation is updated as necessary
 
 ### Why this change is needed?
-
-Provide an explanation of why this change is needed, with links to any Issues (if appropriate).
-If this is a bugfix or a new feature, and there are no existing Issues, then please also create an issue that will make it easier to track progress with this PR.

.github/support.yml

@@ -4,7 +4,7 @@ supportLabel: question
 # to a support page, or set to `false` to disable
 supportComment: >
   This looks like a support question. Please ask your support questions on
-  [StackOverflow](https://stackoverflow.com/questions/tagged/phpspreadsheet),
+  [StackOverflow](http://stackoverflow.com/questions/tagged/phpspreadsheet),
   or [Gitter](https://gitter.im/PHPOffice/PhpSpreadsheet).
 
   Thank you for your contributions.