Remove PHP 5.5 support

Deterministic results for ModifyLimitQueryTest

Add error code mapping for "no default value" to MySQL driver

Use implemented method instead of duplicate implementation

When following error message is shown, then it will get converted to the
correct Exception classs of NotNullConstraintViolationException:

  PDOException: SQLSTATE[HY000]: General error: 1364 Field '...' doesn't have a
  default value

[Documentation] Extend Events documentation

Json unflawed Type (DDC-3863)

Fixing method name 'rollBack'

Fix SQL queries numbering in test failure output

For example if the DebugStack SQL logger contains 3 queries, then we want an output like this:
```
3. <query 3>
2. <query 2>
1. <query 1>
```
not like that:
```
4. <query 3>
3. <query 2>
2. <query 1>
```

Add more information for failed queries in tests

Fluent methods in QueryBuilder are now documented as returning `$this`

Catch Throwable in Connection::transactional()

fix grammar in DBALException messages

- have forgot -> have forgotten
- larger or equal to 0 -> larger than or equal to 0

Remove arbitrary line number from github link

+ Change formating of code

Fluent methods in QueryBuilder are now documented as returning `self`

This allows a subclass to be used fluently without confusing static
analysis tools.

Multiple dialects require a --list per dialect

Add description for OnSchemaAlterTableAddColumn, OnSchemaAlterTableRemoveColumn, OnSchemaAlterTableChangeColumn, OnSchemaAlterTableRenameColumn events

Without using ``--list|-l`` you get a too many arguments error.

As an example ...

```
[ 15/02/2016 17:45:32 ] [ C:\wamp\www ] >vendor\bin\doctrine-dbal d:re mysql57 mysql


  [Symfony\Component\Console\Exception\RuntimeException]
  Too many arguments.


dbal:reserved-words [-l|--list [LIST]]


[ 15/02/2016 17:47:39 ] [ C:\wamp\www ] >vendor\bin\doctrine-dbal d:re -l mysql57 mysql


  [Symfony\Component\Console\Exception\RuntimeException]
  Too many arguments.


dbal:reserved-words [-l|--list [LIST]]


[ 15/02/2016 17:47:48 ] [ C:\wamp\www ] >vendor\bin\doctrine-dbal d:re -l mysql57 -l mysql
Checking keyword violations for mysql57, mysql...
There are 5 reserved keyword violations in your database schema:
  - Table affiliates column key keyword violations: MySQL57, MySQL
  - Table epos_landing_pages column key keyword violations: MySQL57, MySQL
  - Table purchase_notifications column trigger keyword violations: MySQL57, MySQL
  - Table xpermissions column add keyword violations: MySQL57, MySQL
  - Table xpermissions column delete keyword violations: MySQL57, MySQL
```