Project Euler Problem #002: Even Fibonacci numbers

(Problem Link)

Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:

<p align="center"> 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... </p>

By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.

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<p align="center"> A massive collaborative effort by <a href="https://github.com/OpenGenus/cosmos">OpenGenus Foundation</a> </p>

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