Fixed linker issued due to missing static inline qualifier

* Fixed missing static inline qualifier from cc_omap_post_erase_fixup.
* Updated version numbers and notes.

Author: JacksonAllan

benchmarks/omap_and_oset/bench_omap_and_oset.cpp

@@ -1,6 +1,6 @@
 /*
 
-Convenient Containers v1.3.0 - benchmarks/omap_and_oset/bench_omap_and_oset.cpp
+Convenient Containers v1.3.1 - benchmarks/omap_and_oset/bench_omap_and_oset.cpp
 
 This file benchmarks CC's ordered map and ordered set against the equivalent C++ STL containers.
 

cc.h

@@ -1,4 +1,4 @@
-/*----------------------------------------- CC: CONVENIENT CONTAINERS v1.3.0 -------------------------------------------
+/*----------------------------------------- CC: CONVENIENT CONTAINERS v1.3.1 -------------------------------------------
 
 This library provides usability-oriented generic containers (vectors, linked lists, unordered maps, unordered sets,
 ordered maps, and ordered sets).
@@ -771,6 +771,7 @@ Including the library:
 
 Version history:
 
+  23/08/2024 1.3.1: Fixed missing static inline qualifier on an internal omap function.
   29/07/2024 1.3.0: Added ordered map and ordered set.
                     Fixed cc_erase_itr to return a correctly typed pointer-iterator instead of void *. 
                     Fixed a bug in list that caused cc_next and cc_prev to behave incorrectly when passed an r_end and

tests/tests_against_stl.cpp

@@ -1,6 +1,6 @@
 /*
 
-Convenient Containers v1.3.0 - tests/tests_against_stl.cpp
+Convenient Containers v1.3.1 - tests/tests_against_stl.cpp
 
 This file tests CC containers against the equivalent C++ STL containers.
 Primarily, it checks that a CC container and its equivalent STL container end up in the same state after a random

tests/unit_tests.c

@@ -1,6 +1,6 @@
 /*
 
-Convenient Containers v1.3.0 - tests/unit_tests.c
+Convenient Containers v1.3.1 - tests/unit_tests.c
 
 This file tests CC containers.
 It aims to cover the full API and to check corner cases, particularly transitions between placeholder containers and