fix isBase64 and isBase32 seeing empty string as invalid, fixes #1418

[AberDerBart]

isBase64('') and isBase32('') now return true, which is correct behaviour according to RFC4648

Upon regeneration of the code, there were some additional files changes, I am not sure if this is right, so I made a seperate commit.

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (where applicable)
• Tests written (where applicable)

[profnandaa]

@AberDerBart -- Thanks for the PR! 🎉 please remove all the unrelated changes from the diff to make it easy for reviewing.

[codecov]

Codecov Report

Merging #1419 into master will not change coverage.
The diff coverage is 100.00%.

@@ Coverage Diff @@## master #1419 +/- ##
=========================================
Coverage 100.00% 100.00% =========================================
Files 95 95 Lines 1254 1254 =========================================
Hits 1254 1254 

Impacted Files	Coverage Δ
src/lib/isBase32.js	100.00% <100.00%> (ø)
src/lib/isBase64.js	100.00% <100.00%> (ø)

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[AberDerBart]

@profnandaa done. Note that also the code for isBase32 and isBase64 is not generated.

[AberDerBart]

any update on this?

[profnandaa]

LGTM.
/cc. @tux-tn@ezkemboi -- can have a look?

[tux-tn]

LGTM 🎉