Implement DMAX and DSUM functions, following the pattern from DMIN.
Refactored the D* function enum to have instances return the function implementation instances rather than using a case construct, now that Java 8 is required.
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1819376 13f79535-47bb-0310-9956-ffa450edef68
Bug 53691: Fix a copy/paste error in CFRuleRecord.clone()
also make CFRuleRecord.toString() print out more information which caused the bug to be much harder to find
Add unit tests to verify/reproduce this
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1596251 13f79535-47bb-0310-9956-ffa450edef68
Greg Woolsey
Dominik Stadler
Nick Burch
Yegor Kozlov