v4.1.0

Added XIRR function;
Updated PV function to include optional number of periods.

v4.0.1

• Add Inflation-adjusted Return
• Fix bug with IRR

v4.0.0

Merge pull request #10 from mmcdermott/irr-perf-improvements

Irr perf improvements

v3.0.0

Added PMT function

v2.0.1

Cleaned up code, fixed finance.DF test bug, and added Travis CI

v2.0.0

Made application compatible with both client and server sides.

v1.0.0

Add IRR