Use latest parent

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Update jsr305 to version 2.0.2

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Allow throwing NPEs - that's the point of the method

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Mark Nullsafe class as utility class

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Ignore PMD rule set

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Created @NotNullByDefault annotation for null analysis.

This annotation works on all available element types. It should be the
default for all available packages everywhere.

Signed-off-by: Sebastian Hoß <mail@shoss.de>
Added deprecation warning

Signed-off-by: Sebastian Hoß <mail@shoss.de>