Bigmap for Java

1.0.16 - 2023-11-04

Improved build system for cross testing different JDK versions
Bump tokyocabinet v0.0.15
Bump tkrzw v0.0.8
Bump rocksdb v8.3.2
CI workflows for Java 21

1.0.15 - 2023-01-18

Many releases before this one, starting changelog