Indents suggestions

[huskcasaca]

Thank you for filing an issue. If this is a bug that you want to report, please take the time to provide some information:

• Version of the library:
• Affected devices:
• Affected versions:

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I think that using an indent size of 4 is more appropriate for a Kotlin project. It also aligns with the official style guide.

[vanniktech]

I like 2 and use square code styles.