Merge branch 'f-int32' into 'dev'

Switch integer values to int32

See merge request !3

CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+* Integer value is 32 bit now.
+
 ### Deprecated
 
 ### Removed

proto/caosdb/entity/v1alpha1/main.proto

@@ -90,7 +90,7 @@ message ScalarValue {
   // Wraps different optimized representations of a single value.
   oneof scalar_value {
     // The value as integer
-    int64 integer_value = 1;
+    int32 integer_value = 1;
     // The value as double
     double double_value = 2;
     // The value as bool