Alignment with Carbon version 10.27 (#495)

* chore(deps-dev): bump devDependencies

* docs: update number of available carbon icons

* feat(notification): distinguish dispatched close event between click/timeout

* fix(notification): prevent class from being overriden by $$restProps

* docs(notification): improve example body copy

* fix(notification): remove notificationType prop

* refactor(notification): resolve svelte file in imports

* fix(notification): prevent class from being overridden by $$restProps

* feat(notification): update TS signature for dispatched close event

* docs: update contributing

* fix(loading): adjust spinner styles

* feat(tag): support custom icon variant

* feat(tile): add optional expand/collapse icon labels to ExpandableTile

* feat(code-snippet): support disabled state for single and multi-line types

* fix(code-snippet): remove impossible class directive

* fix(code-snippet): showMoreLess button size should be "field", not "small"

* fix(password-input): disable visibility button

- set default values for tooltipAlignment, tooltipPosition

* fix(text-input): add missing warning field wrapper class

* feat(button): infer hasIconOnly using $$slots API

- requires Svelte version >=3.25

* docs(button): add danger tertiary, icon-only example

* feat(button): set default values for tooltip alignment, position

* docs: document dynamic theming

* fix(modal): correctly set class props #482

* fix(form): forward submit event in FluidForm #487

* feat(dropdown): support warning state

* feat(multi-select): support warning state

* fix(multi-select): prevent dropdown from opening if disabled

* feat(number-input): support warning state

* chore(deps-dev): upgrade devDependencies

* docs:  bump @carbon/themes, carbon-components

* refactor(data-table): co-locate DataTableSkeleton with DataTable

* docs: update number of pictograms

* fix(password-input): add missing "bx--btn" class to visibility toggle

* docs: increase z-index for component preview

CONTRIBUTING.md

@@ -1,12 +1,10 @@
 # Contributing
 
-Note: before submitting a pull request (PR), it is recommended to first [file an issue](https://github.com/IBM/carbon-components-svelte/issues).
+Before submitting a pull request (PR), consider [filing an issue](https://github.com/IBM/carbon-components-svelte/issues) to gain clarity and direction.
 
 ## Prerequisites
 
-This project requires Node.js (version 12 or greater) and Yarn (version 1 or greater).
-
-- [Node.js](https://nodejs.org/en/download/package-manager/)
+- [Node.js](https://nodejs.org/en/download/package-manager/) (version >=12)
 - [Yarn](https://classic.yarnpkg.com/en/docs/install)
 
 ## Project set-up
@@ -65,6 +63,12 @@ If linked correctly, any change to a component in the `src` folder should be ref
 
 ## Development workflow
 
+Create a topic branch from `master`. Keep your PR focused and branch up-to-date with upstream `master`.
+
+```sh
+git checkout -b new-feature
+```
+
 Preview changes to components from the `src` folder in the documentation website located in `docs/`.
 
 In the `docs` folder, run: