Update version number to v0.27

CHANGELOG.md

-v0.26 + 1
+v0.27 + 1
+---------
+
+### Changes or improvements
+
+### API additions
+
+### API removals
+
+### Breaking API changes
+
+v0.27
 ---------
 
 ### Changes or improvements

include/git2/version.h

@@ -7,12 +7,12 @@
 #ifndef INCLUDE_git_version_h__
 #define INCLUDE_git_version_h__
 
-#define LIBGIT2_VERSION "0.26.0"
+#define LIBGIT2_VERSION "0.27.0"
 #define LIBGIT2_VER_MAJOR 0
-#define LIBGIT2_VER_MINOR 26
+#define LIBGIT2_VER_MINOR 27
 #define LIBGIT2_VER_REVISION 0
 #define LIBGIT2_VER_PATCH 0
 
-#define LIBGIT2_SOVERSION 26
+#define LIBGIT2_SOVERSION 27
 
 #endif