Fixed #246 on master
Merge pull request #248 from lyncodev/fix-246-master

Fixed #246 on master
Made number_format behaviour on null argument compatible with Twig
#251 Add Joda for date function handling and support for string dates
Merge pull request #255 from realcnbs/improve-date-functions

#251 Add Joda for date function handling and support for string dates
#245 - Initial support for expression-based inclusions
Update .travis.yml
Merge pull request #254 from lyncodev/null-safe-number-format-250-master

[master] Made number_format behaviour on null argument compatible with Twig
Merge pull request #256 from thomas-p-wilson/fix-include-expression

#245 - Initial support for expression-based inclusions
Update README.md