Kotlin 1.3 Features: Coroutines

New way to simplify concurrent code

Kotlin 1.3 Features: Contracts

A way to improve static analysis

Plotting Financial Data With Python: Efficient Frontier (N assets)

A way to calculate optimal asset allocation

Plotting Financial Data With Python: Efficient Frontier (2 assets)

Using the power of covariance

Plotting Financial Data With Python: Comparing Returns

How to compare the returns of different stocks

Plotting Financial Data With Python: Variance

Plotting variance for any stock

Plotting Financial Data With Python: History

Plotting price history for any stock