finance 0.1.0

The fundamental package for financial computing with Dart.

[0.1.0] - 3/9/19

• Added nper, ppmt, ipmt, pv, rate, npv and irr. Stibilize interfaces

[0.0.5] - 2/9/19

• Extracted quote retrieval to finance_quote package. Added fv and pmt functions.

[0.0.4] - 1/9/19

• Documentation fixes.

[0.0.3] - 1/9/19

• Documentation fixes.

[0.0.2] - 1/9/19

• Documentation fixes.

[0.0.1] - 1/9/19

• Initial implementation of finance plugin.