Update to new Dokka  (#1100)

* Migrate to new Dokka
* Update to new Knit that actually supports multimodule format

Fixes #1033
diff --git a/gradle.properties b/gradle.properties
index b669d1a..abd32d2 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,15 +9,15 @@
 
 # This version take precedence if 'bootstrap' property passed to project
 kotlin.version.snapshot=1.4.255-SNAPSHOT
-# Also set KONAN_LOCAL_DIST enviroment variable in bootstrap mode to auto-assign konan.home
+# Also set KONAN_LOCAL_DIST environment variable in bootstrap mode to auto-assign konan.home
 
 junit_version=4.12
 infra_version=0.1.0-dev-47
 jackson_version=2.10.0.pr1
-dokka_version=0.10.1
-native.deploy=false
+dokka_version=1.4.20-multimodule-dev-7
+native.deploy=
 validator_version=0.2.3
-knit_version=0.1.6
+knit_version=0.2.1
 coroutines_version=1.3.9
 
 kotlin.mpp.enableGranularSourceSetsMetadata=true