Merge pull request #51 from amir-azari/add-pulse-mask

Implement pulse animation for Pager fragment

Update demo app for Pulse configuration

Add Pulse attributes to attrs.xml

Update SkeletonLayout for Pulse support

Update SkeletonStyle and SkeletonConfig for Pulse properties

Add pulse animation to skeleton mask

Update changelog

Update plugin for publishing to MavenCentral

Refactoring demo app

Simplify layout of demo app

Bump major version

Bump version for artifact

Bump minSdk for library to fix manifest merging with dependencies

Update README.md and fix SkeletonConfig.default() for Java