Stream tokenizer

[Borewit]

Merge tokenizer API to master branch

This PR includes major changes to the file-type API.

Includes pull requests:

• Use tokenizer #262: Initial integration with strtok3
• Use tokenizer #262: Use tokenizer
• Separate Node.js dependency #265: Separate Node.js dependency
• Support aac & mpeg-2 #266: Support aac & mpeg-2
• Use tokenizer browser #268: Use tokenizer browser
• Fix extensions and mimeTypes TypeScript types #270: Fix extensions and mimeTypes TypeScript types
• Stop execution after fileType.stream error #273: Stop execution after fileType.stream error
• Fix waiting for ignore to be completed #274: Fix waiting for ignore to be completed
• Fix duplicate name using module instance & file-type result. #275: Fix duplicate name using module instance & file-type result.
• Make test name more explicit #276: Make test name more explicit
• Add Node.js script to analyze single file (tokenizer version) #277: Add Node.js script to analyze single file (tokenizer version)
• Fix readonly-sets #278: Fix readonly-sets
• Document module function parseTokenizer  #279: Document module function parseTokenizer
• Update dependency strtok3 to v5.0 #283: Update dependency strtok3 to v5.0

[Borewit]

Merge conflicts should be solved after merging: #284

[Borewit]

Sorry, I don't think I can resolve the conflicts without write permission to this branch.
I can resolve continuing on another branch: #286

Merging strategy is overwriting all with this branch, is all the changes of the master should be already incorporated in this branch.

[sindresorhus]

Closing in favor of #286