fix destructuring false returns from changelog functions

The changelog functions can return false when lines are unparsable or
don't exist. The result can no longer be destructured then in newer PHP

fix destructuring false returns from changelog functions

The changelog functions can return false when lines are unparsable or
don't exist. The result can no longer be destructured then in newer PHP
versions. This adds the necessary checks.

It should also handle corrupt lines within a changelog better.

show more ...

codestyle adjustments: class declaration braces

Apply rector fixes to inc/ChangeLog

fix off-by-one error

sexplode needs to return 8 not 7 entries for making
8364f07a11f076bb6973d0c434d189a7aa6c8c56 work correctly.

avoid warning in ChangeLogTrait on weird log lines

Fix grammar error in PHPDoc

Fix PHP Deprecated warning

Adding null-coalescing operator to avoid

str_replace(): Passing null to parameter #3 ($subject) of type
array|string is deprecated

some spelling

import classes, replace dbglog, simplify, remove unused statements, and other warnings from IntelliJ

update phpdocs,
rename dokuwiki/Ui/Draft to PageDraft

move hasRevision() to trait

ChangeLogTrait

- move ChangeLog low level methods into trait
- static ChangeLog::parseLogLine() replaces parseChangeLogLine()
- new ChangeLog::buildLogLine()