Release 0.4.0

New features:

• Tests refactor & nomenclature change
• Basic events download with basic pagination and limit (https://jira.dhis2.org/browse/ANDROSDK-11)
• Tracker data download (TEIs, Enrollments, etc) (https://jira.dhis2.org/browse/ANDROSDK-10)
• Provided 2 separate calls for logout (logout() and wipeDB()) (https://jira.dhis2.org/browse/ANDROSDK-2)
• Program Rules functions implemented (https://jira.dhis2.org/browse/ANDROSDK-16)
• Download categories, categoryOptions, categoryCombinations & categoryOptionCombinations and sync events for programs with cat. combinations configured (https://jira.dhis2.org/browse/ANDROSDK-22)
• Implement DB migrations (https://jira.dhis2.org/browse/ANDROSDK-7)

Bugfixing:

• 2nd Login doesn't retrieve the user OU tree (https://jira.dhis2.org/browse/ANDROSDK-1)