Prepare release 2.1.0 (#482)

* Update META.json

* Drop RELEASE_NOTES.md

* Update meson.build

* Remove mkdocs.yml

META.json

@@ -2,24 +2,26 @@
    "name": "pg_stat_monitor",
    "abstract": "PostgreSQL Query Performance Monitoring Tool",
    "description": "pg_stat_monitor is a PostgreSQL Query Performance Monitoring tool, based on PostgreSQL's contrib module pg_stat_statements. PostgreSQL’s pg_stat_statements provides the basic statistics, which is sometimes not enough. The major shortcoming in pg_stat_statements is that it accumulates all the queries and their statistics and does not provide aggregated statistics nor histogram information. In this case, a user would need to calculate the aggregates, which is quite an expensive operation.",
-   "version": "2.0.4",
+   "version": "2.1.0",
    "maintainer": [
-      "artem.gavrilov@percona.com",
-      "diego.fronza@percona.com"
+      "Artem Gavrilov <artem.gavrilov@percona.com>",
+      "Diego dos Santos Fronza <diego.fronza@percona.com>"
    ],
-   "license": "postgresql",
+   "license": {
+      "PostgreSQL": "https://www.postgresql.org/about/licence"
+   },
    "provides": {
       "pg_stat_monitor": {
          "abstract": "PostgreSQL Query Performance Monitoring Tool",
-         "file": "pg_stat_monitor--2.0.sql",
+         "file": "pg_stat_monitor--2.0--2.1.sql",
          "docfile": "README.md",
-         "version": "2.0.4"
+         "version": "2.1.0"
       }
    },
    "prereqs": {
       "runtime": {
          "requires": {
-            "PostgreSQL": "11.0.0"
+            "PostgreSQL": "12.0.0"
          }
       }
    },
@@ -34,7 +36,7 @@
         "type": "git"
       }
    },
-   "generated_by": "artem.gavrilov@percona.com",
+   "generated_by": "Artem Gavrilov",
    "meta-spec": {
       "version": "1.0.0",
       "url": "http://pgxn.org/meta/spec.txt"