chore(deps): update dependency prettier to v1.15.2 (#12)

This PR contains the following updates:

| Package | Type | Update | Change | References |
|---|---|---|---|---|
| prettier | devDependencies | minor | `1.14.3` -> `1.15.2` | [homepage](https://prettier.io), [source](https://renovatebot.com/gh/prettier/prettier) |

---

### Release Notes

<details>
<summary>prettier/prettier</summary>

### [`v1.15.2`](https://renovatebot.com/gh/prettier/prettier/blob/master/CHANGELOG.md#&#8203;1152)

[Compare Source](https://renovatebot.com/gh/prettier/prettier/compare/1.15.1...1.15.2)

[diff](https://renovatebot.com/gh/prettier/prettier/compare/1.15.1...1.15.2)

-   CLI: allow flag overriding ([#&#8203;5390](https://renovatebot.com/gh/prettier/prettier/pull/5390))
-   JavaScript: do not apply test call formatting to arrow function without body ([#&#8203;5366](https://renovatebot.com/gh/prettier/prettier/pull/5366))
-   JavaScript: do not duplicate comments in styled-components ([#&#8203;5416](https://renovatebot.com/gh/prettier/prettier/pull/5416))
-   JavaScript: do not indent comments behind variable declarations ([#&#8203;5434](https://renovatebot.com/gh/prettier/prettier/pull/5434))
-   JavaScript: inline property decorator should stay inline ([#&#8203;5364](https://renovatebot.com/gh/prettier/prettier/pull/5364), [#&#8203;5423](https://renovatebot.com/gh/prettier/prettier/pull/5423))
-   JavaScript: treat `createSelector` as function composition ([#&#8203;5430](https://renovatebot.com/gh/prettier/prettier/pull/5430))
-   Flow: do not move flow comment for function argument to its body ([#&#8203;5435](https://renovatebot.com/gh/prettier/prettier/pull/5435))
-   Flow: force-break interface body to be consistent with TypeScript interface ([#&#8203;5432](https://renovatebot.com/gh/prettier/prettier/pull/5432))
-   Flow/TypeScript: remove extra indentation for `extends` ([#&#8203;5432](https://renovatebot.com/gh/prettier/prettier/pull/5432))
-   TypeScript: distinguish `module` and `namespace` correctly ([#&#8203;5432](https://renovatebot.com/gh/prettier/prettier/pull/5432))
-   HTML: handle CRLF correctly ([#&#8203;5393](https://renovatebot.com/gh/prettier/prettier/pull/5393))
-   HTML: handle `<pre>` with interpolation ([#&#8203;5400](https://renovatebot.com/gh/prettier/prettier/pull/5400))
-   HTML: preserve content for `<template>` with unknown `lang` ([#&#8203;5388](https://renovatebot.com/gh/prettier/prettier/pull/5388))
-   HTML: preserve incomplete IE conditional comments ([#&#8203;5429](https://renovatebot.com/gh/prettier/prettier/pull/5429))
-   HTML: preserve unterminated IE conditional comments ([#&#8203;5424](https://renovatebot.com/gh/prettier/prettier/pull/5424))
-   HTML: treat capital element as custom element ([#&#8203;5395](https://renovatebot.com/gh/prettier/prettier/pull/5395))
-   Angular: add missing parens for pipe in ternary ([#&#8203;5397](https://renovatebot.com/gh/prettier/prettier/pull/5397))
-   Angular: correctly print unary expression with operator `+` ([#&#8203;5405](https://renovatebot.com/gh/prettier/prettier/pull/5405))
-   Angular: correctly handle parens ([#&#8203;5387](https://renovatebot.com/gh/prettier/prettier/pull/5387))
-   Angular/Vue: whitespaces between interpolation and text are sensitive ([#&#8203;5396](https://renovatebot.com/gh/prettier/prettier/pull/5396))
-   Vue: do not add invalid semicolon for `v-on` attribute value ([#&#8203;5418](https://renovatebot.com/gh/prettier/prettier/pull/5418))
-   SCSS: do not crash on grid value ([#&#8203;5394](https://renovatebot.com/gh/prettier/prettier/pull/5394))
-   Markdown: handle CRLF correctly ([#&#8203;5414](https://renovatebot.com/gh/prettier/prettier/pull/5414))
-   Markdown: identify CJK correctly ([#&#8203;5402](https://renovatebot.com/gh/prettier/prettier/pull/5402))
-   MDX: treat JSX code block same as in Markdown ([#&#8203;5391](https://renovatebot.com/gh/prettier/prettier/pull/5391))

### [`v1.15.1`](https://renovatebot.com/gh/prettier/prettier/blob/master/CHANGELOG.md#&#8203;1151)

[Compare Source](https://renovatebot.com/gh/prettier/prettier/compare/1.15.0...1.15.1)

[diff](https://renovatebot.com/gh/prettier/prettier/compare/1.15.0...1.15.1)

-   Markdown: do not keep increasing backslashes for dollar sign ([#&#8203;5358](https://renovatebot.com/gh/prettier/prettier/pull/5358))

### [`v1.15.0`](https://renovatebot.com/gh/prettier/prettier/blob/master/CHANGELOG.md#&#8203;1150)

[Compare Source](https://renovatebot.com/gh/prettier/prettier/compare/1.14.3...1.15.0)

[diff](https://renovatebot.com/gh/prettier/prettier/compare/1.14.3...1.15.0)

🔗 [Release Notes](https://prettier.io/blog/2018/11/07/1.15.0.html)

</details>

---

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---

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package.json

@@ -41,6 +41,6 @@
     "ava": "0.25.0",
     "codecov": "3.1.0",
     "nyc": "13.1.0",
-    "prettier": "1.14.3"
+    "prettier": "1.15.2"
   }
 }