return tuples instead of sets. can we sort it now?
remove Xmas (it was doubled)
now we can sort dates to build a nice chronological calendar. refs #9
updated readme to reflect changes closes #9
dropped requirements and pinned versions in setup.py refs #11
test if pip install . is working
small typos and docstring fixes
holidays_dates => holidays_set
typo fix
all right, not pinning the version here. refs #11
Merge branch 'drop-requirements-file' of github.com:novapost/workalendar into drop-requirements-file
pip freeze trick to check the used version during the travis execution
Merge pull request #15 from novapost/drop-requirements-file

dropped requirements and pinned versions in setup.py closing #11
workday -> working day refs #12
weekend with the "_" refs #12
fixed_holidays instead of fixed_days closes #12
Merge pull request #14 from novapost/tuples-instead-of-sets

Tuples instead of sets loads of changes in the API
Merge branch 'master' into 12-code-nomenclature

Conflicts:
	README.rst
	workalendar/america.py
	workalendar/asia.py
	workalendar/core.py
	workalendar/europe.py
	workalendar/tests/test_core.py
Merge pull request #16 from novapost/12-code-nomenclature

code nomenclature fixes
Readme fix