chore: release 15.2.0

[github-actions]

🤖 I have created a release *beep* *boop*

15.2.0 (2021-01-11)

⚠ BREAKING CHANGES

• feat!: improve support for async/await yargs/yargs#1823 contains the following breaking API changes:
  • now returns a promise if handler is async.
  • onFinishCommand removed, in favor of being able to await promise.
  • getCompletion now invokes callback with err and `completions, returns promise of completions.
• tweaks to ESM/Deno API surface: now exports yargs function by default; getProcessArgvWithoutBin becomes hidBin; types now exported for Deno.
• find-up replaced with escalade; export map added (limits importable files in Node >= 12); yarser-parser@19.x.x (new decamelize/camelcase implementation).
• usage: single character aliases are now shown first in help output
• ts: yargs now ships with its own types
• drop support for EOL Node 8 (feat!: drop support for EOL Node 8 yargs/yargs#1686)
• deps: yargs-parser@17.0.0 no longer implicitly creates arrays out of boolean arguments when duplicates are provided

Features

• add usage for single-digit boolean aliases (#1580) (6014e39)
• adds deprecation option for commands (027a636)
• adds strictOptions() (#1738) (b215fba)
• adds support for ESM and Deno (#1708) (ac6d5d1)
• command() now accepts an array of modules (f415388)
• completion: takes negated flags into account when boolean-negation is set (#1509) (7293ad5)
• deprecateOption (#1559) (8aae333)
• deps: pull in yargs-parser@17.0.0 (#1553) (b9409da)
• deps: yargs-parser with 'greedy-array' configuration (#1569) (a03a320)
• display appropriate $0 for electron apps (#1536) (d0e4379)
• drop support for EOL Node 8 (#1686) (863937f)
• expose hideBin helper for CJS (#1768) (63e1173)
• helpers: rebase, Parser, applyExtends now blessed helpers (#1733) (c7debe8)
• i18n for ESM and Deno (#1735) (c71783a)
• improve support for async/await (#1823) (169b815)
• introduces strictCommands() subset of strict mode (#1540) (1d4cca3)
• support array of examples (#1682) (225ab82)
• tweaks to API surface based on user feedback (#1726) (4151fee)
• usage: single char aliases first in help (#1574) (a552990)
• yargs-parser: introduce single-digit boolean aliases (#1576) (3af7f04)

Bug Fixes

• proto will now be replaced with proto in parse (#1591) (2474c38)
• add package.json to module exports (#1818) (d783a49), closes #1817
• address ambiguity between nargs of 1 and requiresArg (#1572) (a5edc32)
• code was not passed to process.exit (#1742) (d1a9930)
• deno: get yargs working on deno@1.5.x (#1799) (cb01c98)
• deno: update types for deno ^1.4.0 (#1772) (0801752)
• dependencies: upgrade yargs-parser to fix #1602 (#1603) (c67c257)
• deps: fix enumeration for normalized path arguments (#1567) (0b5b1b0)
• docs: describe usage of .check() in more detail (932cd11)
• exports: node 13.0-13.6 require a string fallback (#1776) (b45c43a)
• expose helpers for legacy versions of Node.js (#1801) (107deaa)
• help always displayed for the first command parsed having an async handler (#1535) (d585b30)
• i18n: Japanese translation phrasing (#1619) (0894175)
• locales: only translate default option group name (acc16de)
• locales: remove extra space in French for 'default' (#1564) (ecfc2c4)
• make positionals in -- count towards validation (#1752) (eb2b29d)
• modules: module path was incorrect (#1759) (95a4a0a)
• move yargs.cjs to yargs to fix Node 10 imports (#1747) (5bfb85b)
• positional: positional strings no longer drop decimals (#1761) (e1a300f)
• strict mode: report default command unknown arguments (#1626) (69f29a9)
• translations: add French translation for unknown command (#1563) (18b0b75)
• translations: fix pluralization in error messages. (#1557) (94fa38c)
• typescript: yargs-parser was breaking @types/yargs (#1745) (2253284)
• usage: translate 'options' group only when displaying help (#1600) (e60b39b)
• yargs: add missing command(module) signature (#1707) (0f81024), closes #1704
• yargs: correct support of bundled electron apps (#1554) (a0b61ac)

Code Refactoring

• ts: ship yargs.d.ts (#1671) (c06f886)

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