8kyu(js): add "Exclamation marks series #2: Remove all exclamation marks

8kyu(js): add "Convert boolean values to strings 'Yes' or 'No'."

8kyu(js): add "Do I get a bonus?"

8kyu(js): add "Are You Playing Banjo?"

8kyu(js): add "Duck Duck Goose"

8kyu(js): add "Century From Year"

8kyu(js): refactor "FIXME: Replace all dots"

8kyu(js): add "FIXME: Replace all dots"

8kyu(js): add "Simple multiplication"

8kyu(js): add "Counting sheep..."

7kyu(js): add "List Filtering"

8kyu(js): add "Beginner - Reduce but Grow"

7kyu(js): refactor "Vowel Count" a bit more

7kyu(js): refactor "Vowel Count"

8kyu(js): add "Vowel Count"

8kyu(js): add "Remove First and Last Character"

8kyu(js): add "String repeat"

8kyu(js): add "Sum of positive"

8kyu(js): add "Return Negative"

8kyu(js): add "Opposite number"

8kyu(js): add "Reversed Strings"

8kyu(js): add "Convert a Number to a String!"

8kyu(js): add "Formatting decimal places #0"

8kyu(js): add "Training JS #15: Methods of Number object--toFixed(),

8kyu(js): add "Contamination #1 -String-"

8kyu(js): add "Multiply"