First version with two massive of Strings#1

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okhomin wants to merge 5 commits into

hyperskill:masterfrom

okhomin:master

Commits on Dec 1, 2018

First version with two massive of Strings
AIexMoran
committed

Commits on Dec 2, 2018

Second version with LinkedHashMap<String, String>
AIexMoran
committed

Commits on Dec 3, 2018

FlashCards with files and commands
AIexMoran
committed

Commits on Dec 9, 2018

Added "log", "hardest card", "reset stats"
AIexMoran
committed
Added args to program "-import", "-export"
AIexMoran
committed