Bump 1.5.12 lib version.

Author: arssher

META.json

@@ -2,7 +2,7 @@
    "name": "pg_pathman",
    "abstract": "Fast partitioning tool for PostgreSQL",
    "description": "pg_pathman provides optimized partitioning mechanism and functions to manage partitions.",
-   "version": "1.5.11",
+   "version": "1.5.12",
    "maintainer": [
       "Arseny Sher <a.sher@postgrespro.ru>"
    ],
@@ -22,7 +22,7 @@
        "pg_pathman": {
            "file": "pg_pathman--1.5.sql",
            "docfile": "README.md",
-           "version": "1.5.11",
+           "version": "1.5.12",
            "abstract": "Effective partitioning tool for PostgreSQL 9.5 and higher"
       }
    },

expected/pathman_calamity.out

@@ -23,7 +23,7 @@ SELECT debug_capture();
 SELECT pathman_version();
  pathman_version 
 -----------------
- 1.5.11
+ 1.5.12
 (1 row)
 
 set client_min_messages = NOTICE;

expected/pathman_calamity_1.out

@@ -23,7 +23,7 @@ SELECT debug_capture();
 SELECT pathman_version();
  pathman_version 
 -----------------
- 1.5.11
+ 1.5.12
 (1 row)
 
 set client_min_messages = NOTICE;

expected/pathman_calamity_2.out

@@ -23,7 +23,7 @@ SELECT debug_capture();
 SELECT pathman_version();
  pathman_version 
 -----------------
- 1.5.11
+ 1.5.12
 (1 row)
 
 set client_min_messages = NOTICE;

src/include/init.h

@@ -160,7 +160,7 @@ simplify_mcxt_name(MemoryContext mcxt)
 #define LOWEST_COMPATIBLE_FRONT		"1.5.0"
 
 /* Current version of native C library */
-#define CURRENT_LIB_VERSION			"1.5.11"
+#define CURRENT_LIB_VERSION			"1.5.12"
 
 
 void *pathman_cache_search_relid(HTAB *cache_table,