Merge pull request #67 from Lobynya/concurency

sort concurrency page

Author: Alex009

learning/concurrency.md

@@ -6,19 +6,24 @@ sidebar_position: 3
 
 ## Материалы
 
-- [kotlinlang docs - Coroutines guide](https://kotlinlang.org/docs/coroutines-guide.html) - required
-  - [Shared mutable state and concurrency](https://kotlinlang.org/docs/shared-mutable-state-and-concurrency.html)
-- [kotlinlang docs - Immutability in Kotlin/Native](https://kotlinlang.org/docs/native-immutability.html) - required
-- [kotlinlang docs - Concurrency in Kotlin/Native](https://kotlinlang.org/docs/native-concurrency.html) - required
-- [kotlinlang docs - Concurrent mutability](https://kotlinlang.org/docs/mobile/concurrent-mutability.html) - required
+### Обязательные
+
+- [kotlinlang docs - Coroutines guide](https://kotlinlang.org/docs/coroutines-guide.html)
+- [kotlinlang docs - Immutability in Kotlin/Native](https://kotlinlang.org/docs/native-immutability.html)
+- [kotlinlang docs - Concurrency in Kotlin/Native](https://kotlinlang.org/docs/native-concurrency.html)
+- [kotlinlang docs - Concurrent mutability](https://kotlinlang.org/docs/mobile/concurrent-mutability.html)
+- [Kotlinx.coroutines - Sharing and background threads on Kotlin/Native](https://github.com/Kotlin/kotlinx.coroutines/blob/native-mt/kotlin-native-sharing.md)
+- [Многопоточность и Kotlin в Яндекс.Картах: как не допустить падения новых фич на iOS](https://habr.com/ru/company/yandex/blog/575846/)
+- [KotlinConf 2019: Kotlin Native Concurrency Explained by Kevin Galligan](https://www.youtube.com/watch?v=oxQ6e1VeH4M)
+
+### Дополнительные
+
 - [KotlinConf 2018 - Kotlin/Native Concurrency Model by Nikolay Igotti](https://www.youtube.com/watch?v=nw6YTfEyfO0)
-- [KotlinConf 2019: Kotlin Native Concurrency Explained by Kevin Galligan](https://www.youtube.com/watch?v=oxQ6e1VeH4M) - required
-- [Многопоточность и Kotlin в Яндекс.Картах: как не допустить падения новых фич на iOS](https://habr.com/ru/company/yandex/blog/575846/) - required
 - [Touchlab - Practical Kotlin Native Concurrency](https://dev.to/touchlab/practical-kotlin-native-concurrency-ac7)
 - [Touchlab - Kotlin/Native Concurrency](https://touchlab.co/kotlin-native-concurrency/)
-- [Kotlinx.coroutines - Sharing and background threads on Kotlin/Native](https://github.com/Kotlin/kotlinx.coroutines/blob/native-mt/kotlin-native-sharing.md) - required
 - [Роман Елизаров — Корутины в Kotlin](https://www.youtube.com/watch?v=rB5Q3y73FTo)
 - [Learning Concurrency in Kotlin](https://www.packtpub.com/product/learning-concurrency-in-kotlin/9781788627160)
+- [Материалы с конференций](https://confluence.icerockdev.com/pages/viewpage.action?pageId=78134108)
 
 ## Интересные детали