�� Automatic code style fixes

More style fixes

Automatic code style fixes

renamed getDB to getPdo

This is clearer in what to expect as a return value

provides backward compatibility for table and column names as query parameters

fix calls to non existing method pdo()

fixes two compatibility issues:
1. reset $data cache on new query
2. if the second argument passed to query() is array, treat it as $args

backwards compatibility fixes

fix helper tests

This ensures that the helper is working as intended for backwards
compatibility. New tests for the new class still have to be added.

admin interface cleanup

Query saving has been moved to its own class

first go at refactoring

The goal is to completely deprecate the helper plugin in favor of
instantiating SQLiteDB

Mention the plugin name

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PHP fix

Don't try to access non-existing offset

Fix missing OR REPLACE in storeEntry() helper method

Fixes #62

made string access compatible with PHP 7.4

curly braces access to strings is deprecated. square braces are the way
to go

current version can be "0", so me must use identical comprasion operator

Added event on migration

This new event allows plugins to act when a database migration is
executed. This makes it possible to do more complex migrations that
require more than just SQL.

The BEFORE

Added event on migration

This new event allows plugins to act when a database migration is
executed. This makes it possible to do more complex migrations that
require more than just SQL.

The BEFORE event is executed before the migration file is applied. The
default action is to apply that file and increase the dbversion field in
the opts table. When an event prevents the default, the proper result
has to be set! When the result is true, the dbversion is increased and
any additional migrations are run. When the result is false, the
migration process is aborted.

The AFTER event is only triggered after the migration file has been
applied or the BEFORE event set a truish result. At the AFTER time, the
dbversion has already been increased.

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register CLEANID and RESOLVEPAGE as SQL functions

added regular expression support

added PAGEEXISTS sql statement

no longer use PHP4 style constructor

convenient record storing function

some more help with debugging

fixed doc blocks

use variadic parameter docs instead of @internal

Improve PHPDocs and error handling