Rename Proposal Plugins

[hzoo]

Ref https://twitter.com/left_pad/status/905180504676294656

Maybe other words would be better but want to stick with how we talk about it on TC39

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Renaming all tc39 proposal plugins to -proposal (this also means change our policy to start each plugin as proposal)

Example Work

• git mv packages/babel-plugin-transform-async-generator-functions packages/babel-plugin-proposal-async-generator-functions
• Find/replace transform-async-generator-functions to proposal-async-generator-functions

cat test.txt | xargs -I {} sh -c 'git mv {} "$(echo {} | sed "s/transform/proposal/")"' thanks to @weikinhuang

packages/babel-plugin-transform-class-properties
packages/babel-plugin-transform-decorators
packages/babel-plugin-transform-do-expressions
packages/babel-plugin-transform-export-default
packages/babel-plugin-transform-export-namespace
packages/babel-plugin-transform-function-bind
packages/babel-plugin-transform-function-sent
packages/babel-plugin-transform-nullish-coalescing-operator
packages/babel-plugin-transform-numeric-separator
packages/babel-plugin-transform-object-rest-spread
packages/babel-plugin-transform-optional-catch-binding
packages/babel-plugin-transform-optional-chaining
packages/babel-plugin-transform-pipeline-operator
packages/babel-plugin-transform-throw-expressions
packages/babel-plugin-transform-unicode-property-regex

cc @matt-oconnell

[babel-bot]

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/5497/

[Aprillion]

Do you plan to address obsolete references in package.json and fix dead github links e.g. on https://www.npmjs.com/package/babel-plugin-transform-optional-chaining ?

that is still the first result of https://google.com/search?q=babel%20optional%20chaining and it points to https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-optional-chaining which is 404 Not Found

versions after 7.0.0-beta3 are published to https://www.npmjs.com/package/@babel/plugin-proposal-optional-chaining => not sure if there is some mechanism for people with babel-plugin-transform-optional-chaining in their package.json to be notified