inheritance demo
minor variable renaming
whitespace
cleaned up example, added if/else
updated inheritance demo
fixed element loading for backward compatibility
year +1
adding twig-1.8.3
deleting twig-1.8.2
bumping twig version to 1.8.3
twig version 1.8.3
fixed typo
wiki info, download link
added TWIG_DIR constant, deprecates TWIG_VERSION

... to support latest twig naming conventions.