3.x Types Issue: FontAwesomeIconProps missing values

[brandon-mork]

Describe the bug
Types in index.d.ts FontAwesomeIconProps do not match actual expected props in FontAwesomeIcon.js.

Expected behavior
Exact match of supported props and associated types definition.

Reproduction
In any typescript app consuming v3.0.2 of vue-fontawesome, attempt to utilize prop size="xl". See type error:
error TS2322: Type '"xl"' is not assignable to type '"lg" | "xs" | "sm" | "1x" | "2x" | "3x" | "4x" | "5x" | "6x" | "7x" | "8x" | "9x" | "10x" | undefined'.

Additional context
Issue introduced by: #366

Exact diff of expected types

- size?:         'xs' | 'sm' | 'lg'                | '1x' | '2x' | '3x' | '4x' | '5x' | '6x' | '7x' | '8x' | '9x' | '10x'
+ size?: '2xs' | 'xs' | 'sm' | 'lg' | 'xl' | '2xl' | '1x' | '2x' | '3x' | '4x' | '5x' | '6x' | '7x' | '8x' | '9x' | '10x'
+ bounce?: boolean
+ shake?: boolean
+ beat?: boolean
+ fade?: boolean
+ beatFade?: boolean
+ flash?: boolean
+ spinPulse?: boolean
+ spinReverse?: boolean

[jasonlundien]

@brandon-mork ---

I have added in the missing sizes. I will go ahead and close this issues. Let us know if anything else pops up.

[brandon-mork]

@jasonlundien your PR fails to sync the other props available on the component but missing in the types... Logged as a separate issue: #428

Provided PR would have fixed all of the documented issues: #416