update kotlin to 1.4.31

update mirai to 2.4.1

Author: lightless233

build.gradle.kts

@@ -2,7 +2,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     java
-    kotlin("jvm") version "1.4.21"
+    kotlin("jvm") version "1.4.31"
     id("com.github.johnrengelman.shadow") version "5.2.0"
 }
 
@@ -15,9 +15,12 @@ repositories {
     jcenter()
 }
 
+val compileKotlin: KotlinCompile by tasks
+compileKotlin.kotlinOptions.useIR = true
+
 dependencies {
 
-    api("net.mamoe", "mirai-core", "2.1.0")
+    api("net.mamoe", "mirai-core", "2.4.1")
 
     implementation("org.yaml:snakeyaml:1.27")
     implementation("org.slf4j:slf4j-api:1.7.30")

src/main/kotlin/me/lightless/izumi/config/BotConfig.kt

@@ -31,4 +31,7 @@ class BotConfig {
     var useProxy by Delegates.notNull<Boolean>()
     lateinit var proxyIp: String
     var proxyPort by Delegates.notNull<Int>()
+
+    // 天气预报的 key
+    lateinit var weatherKey: String
 }