typo fix: hardwritten data in columns.py code...
change the identifier of labels. there was a bug
fix a pb with labels: label on attribute and on connection point are different
fix a bug in get_columns: get_class_mebers returns a list of tuples and not a dict
use a custom csv file writer, to handler unicode; rewrite every file overture with context manager
add a formatter module to help formatting date and null values for GD API
properly format dates and null values in archiver. requires the list of dates and datetimes in the dataset
change the way some methods are called in dataset.py, connection.py and schema.py, to be conform to new archiver arguments
change version to 1.1.2
Revert "change version to 1.1.2"

This reverts commit 033aab35718f4510fee3e6eaf17d71d6cc6fb76d.
change version to 1.1.2
Merge branch 'mvdb/ANA-418/change-error-formatting' into mvdb/hot-bugfixes
bugfixes and modification of examples to test the fixes
try to fix low connections: do not delete project in test_dataset. But didnt work
Merge branch 'mvdb/ANA-423/date-dimension-already-exists' into mvdb/hot-bugfixes

Conflicts:
	gooddataclient/dataset.py
	gooddataclient/formatter.py
bugfix in error logging in dataset.py, and added a test in test_dataset to test exceptions
reverse version change to 1.1
Merge branch 'mvdb/ANA-418/change-error-formatting' into mvdb/hot-bugfixes

Conflicts:
	setup.py
review fixes: imports, typos, little fixes
go back to use std csv module, with proper utf-8 encoding