[DDC-2429] Fix xsd definition
Fixed generating join column names for self referencing entity.
Add missing mapping files
ready
forget add changes
remove comment about cli-config
ready
fix bc
add docs
add debug variable and check for loader
Merge pull request #673 from hell0w0rd/namespace_base_commands_names

Namespace based command names
Merge pull request #672 from hell0w0rd/simplification_example

Simplification example
Merge pull request #669 from hason/many_to_many

Fixed generating column names for self referencing entity.
Merge pull request #666 from FabioBatSilva/DDC-2429

[DDC-2429] Fix xsd definition
[DDC-2471] Fix EQ/NEQ null handling of criteria
Merge remote-tracking branch 'asm89/ddc-2417'

* asm89/ddc-2417:
  [DDC-2471] Fix EQ/NEQ null handling of criteria
Fix an instance of doubled words
Merge pull request #678 from jbafford/duplicate-words-fix

Fix an instance of doubled words in the docs
Release 2.4.0-RC1
Bump dev version to 2.4.0