v3.0.0

Full Changelog

Implemented enhancements:

• Rename v3/stripe partial as v3/elements #30 (spaghetticode)

Merged pull requests:

• Allow to customize Stripe Elements styles via JS #34 (spaghetticode)
• Stop injecting css in host app while installing #33 (kennyadsl)
• Manage Stripe V3 JS code via Sprokets #32 (spaghetticode)