Challenge Done#9

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AlanDavd wants to merge 3 commits intoPlatziMaster:masterfrom

AlanDavd:master

Commits on Apr 25, 2020

Challenge done
AlanDavd
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Commits on May 14, 2020

Add test with base greater that 18
AlanDavd
committed
Add more hex values to reduce errors with a base greater than 18
AlanDavd
committed