Hi Tao.
I've merged PR #128 but please see my comment on the JIRA page.[1]
Thanks for your interest in improving the library,
Gilles
[1]
https://issues.apache.org/jira/browse/MATH-1509?focusedCommentId=17064306=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-17064306
Sorry it has taken me so long to respond, but I spent a long time thinking
about this and started a response several times.
I see no reason not to go to long bit indexes. This would be reflected in
Shape.getNumberOfBits returning a long as well as other places.
I would like to revisit some
