(Hopefully) some improvements to Kotlin code and some general cleanup

[Bombo]

I'm currently adapting Kotlin myself and in our current project we needed Fingerprint authentication, so I've stumbled upon your library and noticed some things, that weren't Kotlin enough for me. ;)

Everything is up for discussion, of course.

You should get all the information from my commit messages, but overall what I did is:

• Mitigated the need for explicit init{} blocks
• Removed the need for all !! operators
• Removed hungarian notiation. I know where you're coming from here, and I too am using this in basically all my Android java classes, but after reading this great blog post from Jake Wharton I am in the middle of slowly reducing this. Either way, I think with Kotlin and properties, hungarian notiation should be avoided in Kotlin in General.
• Moved from explicit getter/setter methods to property getters and setters. This overall just makes the library nicer to use from Kotlin. Overall everything should stay the same from a Java standpoint. I also added deprecated methods to be used from Kotlin with nice ReplaceWith parameters for easy Alt+Enter replacements.
• Fixed spelling issue with FahSecureSettingsDialog.setPositive() methods, but kept setPostisive() methods around with added deprecation annotations. Same goes for FahErrorType.Auth.AUTH_TOO_MANY_TRIES.
• Fixed small issue with Documentation headings.
• Re-applied .gitignore file, so .idea folder is not source-controlled anymore. All of this is generated by Android Studio via build.gradle file anyway, and I tried a clean checkout and didn't have any issues.

Let me know what you think!

[pro100svitlo]

this is little bit different theme, but maybe you have some ideas about this issue?

[pro100svitlo]

thanks for your job :)

[Bombo]

No problem at all. This was fun! :)