TeXstudio: download ældre versioner

TeXstudio 4.4.1
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- fix file association on OSX
- allow ignore all in spell checker dialog
- fix language code for LanguageTool
- fix cancel file close (#2705)
- fix missing icons in latex/math menu

TeXstudio 4.4.1
-----------------
- fix file association on OSX
- allow ignore all in spell checker dialog
- fix language code for LanguageTool
- fix cancel file close (#2705)
- fix missing icons in latex/math menu

TeXstudio 4.4.0
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- new icon theme Colibri (by geolta)
- modernized manual
- faster removing of multiple lines
- end multi cursor mode with esc
- **no** win/qt5 build
- switch to CMAKE build system (qmake deprecated)
- hide/filter configuration completer list
- bug fixes

TeXstudio 4.3.0
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- show most used command at first place in completer
- more cwls
- get position into clipboard in pdf on ctrl+shift+click (#2623)
- copy/paste table content into table/matrix wizard
- move to next/previous word now stops at every delimiter (no skip over several brackets) #2311
- build qt6/win for win10+
- small bug fixes