refactor(components): rewrite Heading component

* remove `alignment` and `withMargin` props (consumer should handle
that)
* move styles to Sass placeholders to avoid repeats with headings
coming from WordPress
* refactor some other components that depend on Heading to avoid ESlint
errors

1 files changed, 1 insertions, 1 deletions

diff --git a/src/components/atoms/index.ts b/src/components/atoms/index.ts
index d9cf865..672440c 100644
--- a/src/components/atoms/index.ts
+++ b/src/components/atoms/index.ts
@@ -1,6 +1,6 @@
 export * from './buttons';
 export * from './forms';
-export * from './headings';
+export * from './heading';
 export * from './icons';
 export * from './images';
 export * from './layout';