Bump version to 0.75.1, update CHANGELOG.md

Author: jgriffiths

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## Release 0.75.1 - 25-04-01
+
+### Fixed
+- GA_create_transaction: Return an invalid amount error instead of
+  an assertion failure if any output amount in a transaction is 0.
+
 ## Release 0.75.0 - 25-03-20
 
 ### Added

CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(gdk VERSION 0.75.0 LANGUAGES C CXX)
+project(gdk VERSION 0.75.1 LANGUAGES C CXX)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)