Fix an instance of doubled words
Fix spelling in sharding docs
Merge pull request #326 from jbafford/doubled-words-fix

Fix an instance of doubled words in the docs
Release 2.4.0-RC1
Bump dev version to 2.4.0
Release 2.4.0-RC1
Bump dev version to 2.4.0
Added deep clone to QueryBuilder
Correcting reference to VarDateTimeType class.

VarDateTime is replaced by correct VarDateTimeType class.
Fix DDC-2470
Fix CS
Merge pull request #332 from FabioBatSilva/DDC-2470

[DDC-2470, DDC-2441] Use column name instead of alias to modify order by clause
Merge pull request #331 from Incognito/patch-1

Correcting reference to VarDateTimeType class.
Quoting Table name

Quoting table name to avoid errors with:
SELECT * FROM order;
cleanup, refactor and document ForeignKeyConstraint asset
add abstraction class for asset identifiers
extend interface for constraints to implement a method for returning quoted column names
adjust ForeignKeyContraint asset to be able to return quoted column names
adjust Index asset to be able to return quoted column names
adjust platforms to make use of quoted index and constraint column names