DBAL-392 Moving entity relationship doesn't move foreign key in mysql table

Fix for decimal fields with precision.

DBAL-398: Do not treat assignment operator as a parameter

Fix for DBAL-172

DBAL-200 Missing docs for 1 parameter in Connection::update

Update links in Readme

Fixed SQL Server Platform NULL declaration

Problem with sequence names, PostgreSQL and MixedCased schemas

fixed typo for enabling DEFERRED support

[DBAL-374] Fix issue with column quoting in primary keys, fixing this in indexes in general is much more complex as the code is messy.

Fix SQLServerPlatform adds unique constraint to ADD PRIMARY KEY statement

This will only happen when adding primary keys via ALTER TABLE

default table option not working

- Fixing issue, key name corrected

[MySQL] Fixed bug with comments not adding quotes for tables

Remember to close temporary connection in PostgreSqlSchemaManager::dropD...

Remember to close temporary connection in PostgreSqlSchemaManager::dropDatabase() and PostgreSqlSchemaManager::createDatabase()