* Fix Unintential Deprecated Calls in Tests - FINANCIAL
I think it's best to install these before PR #3166. There are no changes to source code, only to doc-blocks and to test members which continue to inadvertently use calls to deprecated functions.
* Change Tests to Run in Spreadsheet Context
Found and fixed some problems with how MIRR handles errors.
* Eliminate Most Scrutinizer Problems in Test Suite
Mostly minor code changes, with some annotations.
* Missed 2 php-cs-fixer Problems
They should be fixed now.
* More Financial function extracts, this time looking at the Periodic Cashflow functions
* Initial extract of Constant Periodic Interest and Payment functions
oleibman
Adrien Crivelli
Mark Baker