Added return value append redirection

Return values of functions and sections can now be appended to the context:

{print >> var1}A{/print}
{print >> var1}B{/print}

Result: {=var1}

The output would be Result: AB

Added sections

Added

• section feature

Shortened syntax and easier debugging

• Shortened Syntax {if someVar} or {if !someVar} to check a variable is/is not set (MartinMystikJonas)
• Fixed stripping newlines (MartinMystikJonas)
• Added UndefinedVariableException

Bugfix release

• Fixed: Wrapping of '{' #8
• Added: Plugins

Improvements

• Multiline support
• If / else
• break
• user-defined functions

Refactored code, uses nette/tester, changed namespace

The Namespace changed from de\leuffen\text_template to Leuffen\TextTemplate

Added {else} and {elseif} to if - constructs

Now this works

{if name='abc'}
Say something
{elseif name='cda'}
Say all
{else}
Say nothing
{/if}