Merge pull request #733 from benjeffery/release-prep

C API Release prep - version macro and changelog.

Author: benjeffery

c/CHANGELOG.rst

@@ -1,9 +1,7 @@
 ---------------------
-[0.99.3] - 2020-XX-XX
+[0.99.3] - 2020-07-27
 ---------------------
 
-In development.
-
 **Breaking changes**
 
 - ``tsk_mutation_table_add_row`` has an extra ``time`` argument. If the time

c/tskit/core.h

@@ -123,7 +123,7 @@ to the API or ABI are introduced, i.e., the addition of a new function.
 The library patch version. Incremented when any changes not relevant to the
 to the API or ABI are introduced, i.e., internal refactors of bugfixes.
 */
-#define TSK_VERSION_PATCH   3
+#define TSK_VERSION_PATCH   4
 /** @} */
 
 /* Node flags */