0.9.4

This is tiny intermediary release to lock ongoing changes in stable form for all languages:

• BoringSSL support on Android and Linux
• Fixed some leaks and code styling problems (thanks to @bryongloden)
• Memory management updates for stability in languages, which rely on sloppy GC
• Fix Themis build errors under certain conditions
• Secure Comparator examples for many languages
• Swift3 support + numerous enhancements from @valeriyvan, thanks a lot!
• GoThemis: fixed rare behavior in Secure Session wrapper
• GoThemis examples
• JsThemis syntax corrections and style fixes
• JsThemis Nan usage to enhance compatibility
• More and better Themis Server examples
• Enhanced error messages (now with proper spelling!)
• Corrections for RD_Themis