Setting up project.
Added LogMessages.

Added logging using i18n messages.
Added _nl log messages.
Reformatted messages to show proper failure reason
Updated logging messages.

* Included test suites for packages and all test cases;
* Included test suite for nl_NL locale;
* Updated description;
* Extracted methods for logging in AbstractProcessAssert;
* Added logging messages and keys for assertion failures;
* Renamed nl locale to more specific nl_NL;
* Updated log4j logger pattern so thread is no longer shown;
Ignoring Intellij files.
Added extra checks for active processes.

* Added check for the current process instance not being ended;
* Added check for the current process instance not being suspended;
Corrected nl_nl translations to use special characters.
Added test cases for uncompleted task instances.

* Corrected small typo in nl_nl localization;
* Added two user tasks process and renamed single user task process;
* Simplified LogMessage enum;
* Added fail() invocations for unit tests that expect an exception;
Updated test cases for taskIsUncompleted.

* Switched to single user task process for null check tests;
* Added extra checks to test cases for task completion to ensure
completed tasks are not asserted as uncompleted;
Added tests for Locale completeness.
Updated tests for TaskInstance pending completion cases.
Refactored log messages to use SLF4J formatting.
Switched log messages to MessageFormat to allow for more flexible
translation.
Changed resource bundle loading to enable automatic reloading if the
default locale changes.
Added test cases for taskIsUncompleted for process instance and task
definition key.

* Changed access level to package default for internal classes and
methods.
* Updated comments.
* Split test cases for taskIsUncompleted into those for task instances
and those for process instance / taskDefinitionKey combinations.
Updated @see tags to enable proper javadoc rendering.
Configuration for javadoc generation and switched to jdk version 1.7 as
source and target.
Renamed packages.
Added trace level messages for task instance assertions.