[RELEASE] Notepad++ release 6.8.3

[RELEASE] Notepad++ 6.8.2 release

Use default font if font name loaded from stylers.xml cannot be found in
system.

Update CONTRIBUTING.md

Improve readability of CONTRIBUTING.md (closes notepad-plus-plus#513)

[NEW_RELEASE] Notepad++ 6.7.9.2 release.

Add "php" string to PHP auto-complete

Fix notepad-plus-plus#279

[RELEASE] Notepad++ release 6.7.9.1

Add CSS to languages that are auto-indented

Possible fix for notepad-plus-plus#257

Needs testing. Someone that can compile Npp, please test this!

[RELEASE] Notepad++ 6.7.9 release

Add more keywords to JS auto-complete

Add more keywords to JS auto-complete.
This list is indeed in need of a complete update...