Database.php, QuickFormQuery.php: Initializing of native FormElements: _tgIndex
HelperFormElement.php: new function formElementSetDefault(). Add '%d' to id's of extraButtonInfo text elements.
Manual.rst: minor typos fixed

Fixed

Add `sqlLog` and `sqlLogMode` to QFQ tt-content records.
Add mode 'error' and `none` to sqlLogMode.
Manual.rst: Added explanations for SQL_LOG, SQL_LOG_MODE, and tt-content pendants sqlLog, sqlLogMode. Update config.qfq.ini to latest attributes.
Database.php: rename $mode to $currentQueryMode to make it more descriptive. Recode dbLog().
Logger.php: do nothing if there is no file defined.
Report.php: new function checkUpdateLog().
Config.php: Set defaults for config.qfq.ini SQL_LOG and SQL_LOG_MODE
Store.php: Fix problem that an empty SQL_LOG will be prependad with SYSTEM_PATH_EXT.

Fixed: unnecessary exception if there is no Form / FormElement table
Database.php: New function playSqlFile().
DatabaseUpdate.php: missing table Form won't throw an exception anymore.
Manual.rst: note that formEditor.sql will be played automatically.

For updates of QFQ prior to 0.17.0, do:   ALTER TABLE  `Form` COMMENT =  'Version=<your old QFQ version>'
DatabaseUpdate.php, DatabaseUpdateData.php: new class.
QuickFormQuery.php: Add DB UpdateCheck
Database.php: moved to new subdirectory `database`. Add 'ALTER' as a new SQL command.
FormAction.php, TypeAhead.php, Report.php, Sendmail.php, FillStoreForm.php, Store.php, AbstractBuild.php, Delete.php, Evaluate.php: Update path to Database.php.

Implemented defaultEscapeType. configurable via config.qfq.ini (global) and per Form.
Implemented max GET parameter lenght. Default: 50. BTW: in phpunit test there have been a parameter 'file' which exceeds the limit of 32.

Config.qfq: Skip empty variable names - happens in phpunit tests. Read new `systemEscapeTypeDefault`.
Constants.php: renamed  TOKEN_LDAP_ESCAPE_* to TOKEN_ESCAPE_LDAP_*. Add TOKEN_ESCAPE_MYSQL, TOKEN_ESCAPE_NONE
Database.php: Set charset to real_escape_string() functions properly. Proxy for mysqli::real_escape_string()
Evaluate.php: Respect global escapeTypeDefault. Implement
formEditor.sql: add column `escapeTypeDefault`. Add FormElement 'escapeTypeDefault'.

Manual.rst: update doc how to insert/update/delete non primary templateGroup records.
FormAction.php: removed $templateGroupIndex - solved implicit by defining a LIMIT on 'slaveId' . Implemented '%D' (one below %d). Implemented FE_SQL_HONOR_FORM_ELEMENTS - reduces unecassary SQL queries.
HelperFormElement.php: moved function 'explodeTemplateGroupElements()' to 'QuickFormQuery.php'
Database.php: remove call to explodeTemplateGroupElements() - not necessary at that place.
QuickFormQuery.php: fill STORE_RECORD during Formload - to read templateGroup records very early. Local copy of `getNativeFormElements()`, new `explodeTemplateGroupElements()`

The new implementation creates empty fake instances of all copies of templateGroup FormElements. Those are empty. Before save, the submitted form values will be expanded with the empty fake templateGroup FormElements and such empty values will be saved.
FormAction.php: Rename constant SQL_FORM_ELEMENT_TEMPLATE_GROUP to SQL_FORM_ELEMENT_TEMPLATE_GROUP_FE_ID - to be more precise.
HelperFormElement.php, Database.php: new function explodeTemplateGroupElements()

#3431 / typeAheadSql: columnname 'key' is a reserverd SQL statement - replace by 'id'. Additional the parametername 'typeAheadLdapKeyPrintf' renamed to 'typeAheadLdapIdPrintf'.
typeAhead.php: fixed typo.
TypeAhead.php: introduced new mapping from 'id' (SQL) to 'key' (API).
AbstractBuildForm.php: Constant renamed.
Database.php: update function makeArrayDict() to reflect name mapping.

Fix #3419 / typeAheadSql: Array mit nur einer Spalte oder andere KeyNamen als key / value werden nicht korrekt behandelt.
TypeAhead.php: Added detection of missing ... LIMIT in FE_TYPEAHEAD_SQL. Make resultset always a two column array with columns key/value.
Database.php: Added function hasLimit() and makeArrayDict().

*.php: extend explodeParameter(), explodeParameterInArrayElements() with argument $keyName, to make it more generic.

Create function `Database->getNativeFormElements()` to unify all needed actions on fresh loaded FormElements like explodeParameterInArrayElements, duplicateRetypEelements, copyAttributesToFormElements. Native FormElements will be loaded on 4 different places in 3 classes.

HelperFormElement.php: Moved copyAttributesToFormElements() from QuickFormQuery to HelperFormElement.
AbstractBuildForm.php, BuildFormBootstrap.php, QuickFormQuery.php : Use of Database->getNativeFormElements()
Database.php: HelperFormElement::copyAttributesToFormElements()

Constants.php: Added SQL_LOG_MODE_ERROR - used to force logging of failed SQL queries.
Database.php: Removed temorary debugSql output in error messages. Added 'forced' logging of SQL queries if they failed.

Link.php, AbstractBuildForm.php, BuildFormBootstrap.php, Database.php: introduced constants for glyph. Code rearranged
testtabbles.sql: extended to test Delete with filenames

FormAction.php: cleanup
Store.php: cleanup
Database.php: Added TRUNCATE
fixtures/Generic.sql: added Person.adrId - just as testcase

Database.php: Fixed bug that INSERT returns affected rows. Correct is last_insert_id. Moved 'REPLACE' to behave like 'INSERT' instead of 'UPDATE. Extended Tests

config.example.ini: DB_INIT
Database.php: fire a given DB_INIT string.

Report.php, Database.php: triggerReport() supports stat[] with num_rows, affected_rows and insert_id. rowTotal does not contain anymore inserId (last_insert_id) from fired INSERT queries. Instead num_rows or affected_rows are choosen. New: <level>.line.inserId contains the insertId.

Database.php: sql(..., ROW_IMPLODE_ALL,...) have been confused by columns with identical columnnames (MYSQLI_ASSOC). Has been fixed now by using MYSQLI_NUM.

save.php: return JSON with updated values of all fields.
AbstractBuildForm.php: updated to deliver values of all form elements
Constants.php: constants to distinguish all or specific values of FEs. QUERY_TYPE_*
Database.php: doSQL now returns affectedrows or lastinsertid in case of udpate/inset. Typos fixed.
QuickFormQuery.php: deliver Values as JSON after save.
Save.php: return lastinsertid or affectedrows.

UserReportException.php: Added field SYSTEM_REPORT_COLUMN_NAME to output. Array members renamed to SYSTEM_*.
Various files adjusted to inlcude renamed file `UserFormException.php`.
Link.php: Mamut switch() in parseItem() refactored to use $callTable.
Report.php: refactoring started to use UserReportException() instead of SyntaxReportException. Startet removing all fr_error usages.

UsersManual/Index.rst: added Form.showButton
Support: added findInSet()
AbstractBuildForm: added createDeleteUrl(), prepareSubrecord(), getFormTable(). Rewrote buildSubrecord(): added 'delete' link, rearranged 'new' link. 'ShowDebugInfo' enhanced.
BuildFormBootstrap: rewrote BuildButton() to switch New/Delete Button on or off. Show debugInfo as tooltip.
Constants: New Subrecord contants.
formEditor.sql: added Form.showButton. Adjusted records

Store, Constants, Database, QuickformQuery, AbstratDatabase, StoreTest: renamed several config.ini variables to use the '_'.

Database: rename 'row' to 'record'.
QuickFormQuery: implemented timeout of 86400 for session lifetime.

Link: replaced TYPO3_CONF_VARS by STORE_SYSTEM
Sip, Store: PhpDoc
AbstractBuildForm, BuildFormBootstrap, Constants: implemented constant SYSTEM_SHOW_DEBUG_INFO
Database: rewrote errormessage

Support: removed Function log().
Database: Use of new class Logger.

Store: qfq.ini renamed to config.ini
AbstractBuildForm, Constants, Database: constants renamed: KVP

Database: Moved implementation from PDO to mysqli. Reason: mysqli_num needed for `report`, but PDO can't fetch column names than.