refactoring and fixes

gradle.properties

@@ -3,6 +3,6 @@ kotlin_version=1.3.11
 kotlin_coroutines_version=1.1.0
 kotlin_serialisation_runtime_version=0.9.1
 joda_time_version=2.10.1
-ktor_version=1.0.1
+ktor_version=1.1.1
 
 gradle_bintray_plugin_version=1.8.4

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/Ktor/ProxySettings.kt

@@ -1,6 +1,7 @@
 package com.github.insanusmokrassar.TelegramBotAPI.bot.Ktor
 
-import com.github.insanusmokrassar.TelegramBotAPI.bot.ProxySettings
+import com.github.insanusmokrassar.TelegramBotAPI.bot.settings.ProxySettings
+import io.ktor.http.HttpHeaders
 import okhttp3.Credentials
 import okhttp3.OkHttpClient
 import java.net.InetSocketAddress
@@ -22,7 +23,7 @@ fun OkHttpClient.Builder.useWith(proxySettings: ProxySettings) {
             _, response ->
             response.request().newBuilder().apply {
                 addHeader(
-                    "Proxy-Authorization",
+                    HttpHeaders.ProxyAuthorization,
                     Credentials.basic(proxySettings.username ?: "", password)
                 )
             }.build()

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/ProxySettings.kt

@@ -1,6 +1,7 @@
 package com.github.insanusmokrassar.TelegramBotAPI.bot
 
 import com.github.insanusmokrassar.TelegramBotAPI.bot.Ktor.useWith
+import com.github.insanusmokrassar.TelegramBotAPI.bot.settings.ProxySettings
 import okhttp3.OkHttpClient
 
 @Deprecated(

src/main/kotlin/com/github/insanusmokrassar/TelegramBotAPI/bot/settings/limiters/PowLimiter.kt

@@ -4,6 +4,7 @@ import kotlinx.coroutines.*
 import kotlinx.coroutines.channels.Channel
 import kotlinx.serialization.Optional
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.Transient
 import java.util.concurrent.Executors
 import kotlin.coroutines.*
 
@@ -24,10 +25,13 @@ data class PowLimiter(
     @Optional
     private val powK: Double = 0.0016
 ) : RequestLimiter {
+    @Transient
     private val scope = CoroutineScope(
         Executors.newFixedThreadPool(3).asCoroutineDispatcher()
     )
+    @Transient
     private val eventsChannel = Channel<RequestEvent>(Channel.UNLIMITED)
+    @Transient
     private val awaitTimeRange = minAwaitTime .. maxAwaitTime
 
     init {