- Solved the incompatibility between `pandas` latest version and Python
  3.4. Upgraded travis distro to Xenial/16.04 LTS (#307).
- Added instructions about the usage of the `iso_register` decorator in
  the pull-request template (#309).

**New Calendars**

- Added New Zealand, by @johnguant (#306).
- Added Paraguay calendar, following the work of @reichert (#268).
- Added China calendar, by @iamsk (#304).
- Added Israel, by @armona, @tsehori (#281).