Add assertk library

shared/build.gradle.kts

@@ -1,5 +1,6 @@
 val versions = mapOf(
-    "kotlinx-datetime" to "0.6.2"
+    "kotlinx-datetime" to "0.6.2",
+    "assertk" to "0.28.1",
 )
 
 plugins {
@@ -35,12 +36,13 @@ kotlin {
         }
         commonTest.dependencies {
             implementation(libs.kotlin.test)
+            implementation("com.willowtreeapps.assertk:assertk:${versions["assertk"]}")
         }
     }
 }
 
 android {
-Re    namespace = "org.tle.astrologylibrary"
+    namespace = "org.tle.astrologylibrary"
     compileSdk = 35
     defaultConfig {
         minSdk = 24