Dhii/expression-renderer-base

# Dhii - Expression - Renderer - Base

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## Details
Base functionality for expression renderers.

### Classes
- [`AbstractBaseExpressionTemplate`] - Provides common functionality for expression renderers, such as reading the
expression from the context, factory methods for exceptions, string normalization, etc.
- [`AbstractBaseDelegateExpressionTemplate`] - Provides delegation and container awareness for renderers that need to
delegate the renderer of an expression's terms to other renderers.
- [`AbstractBaseOperatorExpressionTemplate`] - Provides functionality for rendering expressions as operators, with their
terms rendered via delegate templates as operands.
- [`AbstractBaseSelfDelegateExpressionTemplate`] - Provides functionality for creating master renderers, that delegate
_all_ expressions to other renderers.


[Dhii]:                                                     https://github.com/Dhii/dhii

[`AbstractBaseExpressionTemplate`]:                         src/AbstractBaseExpressionTemplate.php
[`AbstractBaseDelegateExpressionTemplate`]:                 src/AbstractBaseDelegateExpressionTemplate.php 
[`AbstractBaseOperatorExpressionTemplate`]:                 src/AbstractBaseOperatorExpressionTemplate.php 
[`AbstractBaseSelfDelegateExpressionTemplate`]:             src/AbstractBaseSelfDelegateExpressionTemplate.php