Upgrade JSON schema API (#111)

* Upgrade JSON schema API

- bump dependencies

* Remove committed ide file

Author: Jaroslav Tóth

json-schema/python/CHANGELOG.md

@@ -30,4 +30,7 @@
 - Added a new Kafka header constant 'interface-utilization' to the header_constants module.
 
 # 0.4.1
-- split a Kafka header constant 'interface-utilization' to 'interface-ipv4-utilization' and 'interface-ipv6-utilization'
+- split a Kafka header constant 'interface-utilization' to 'interface-ipv4-utilization' and 'interface-ipv6-utilization'
+
+# 0.4.2
+- Bump dependencies.