Handle boolean datatype
Update version number 0.2 b/c boolean is a new datatype
dump can handle boolean data
Add v4 test database with boolean data
Update v4-28.mmdb b/c the database file was broken.
Add boolean test. Unfortunately there is a bug in the diskbased code somewhere
Make all defines consistent
Remove unused code.
t/dump_t.c: Remove unsed code
Add test_helper.[ch] to our test files
Simplify all tests
Use GeoIP2-City.mmdb as default database
Skip some tests if the database is to depth for the test