Basic implementation of Jinja2 templates for C++

Main Features

• Supports almost full set of Jinja2 expression (with limited number of fliters and testers)
• Supports only 'for'/'if'/'set' statements
• Supports various types of template values (include reflection to the C++ types)

Known issues

• 'for' statement doesn't support 'if' part
• Limited support of wide-character templates
• Absence of error reporting