various optimizations

[quantizor]

+--------------------------+------------------------+-----------------------+
|                          │ simple markdown string │ large markdown string |
+--------------------------+------------------------+-----------------------+
| markdown-to-jsx (next)   │ 92,269 ops/sec         │ 330 ops/sec           |
+--------------------------+------------------------+-----------------------+
| markdown-to-jsx (latest) │ 90,360 ops/sec         │ 303 ops/sec           |
+--------------------------+------------------------+-----------------------+

[changeset-bot]

🦋 Changeset detected

Latest commit: 0bee64d

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
markdown-to-jsx	Patch

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Click here if you're a maintainer who wants to add another changeset to this PR

[socket-security]

New and removed dependencies detected. Learn more about Socket for GitHub ↗︎

Package	New capabilities	Transitives	Size	Publisher
npm/jest-watch-typeahead@2.2.2	None	0	19.1 kB	simenb
npm/markdown-to-jsx-latest@7.7.3	None	0	0 B

🚮 Removed packages: npm/bs-logger@0.2.6, npm/make-error@1.3.6

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[quantizor]

That last commit fixes #510