chore(release): 6.0.0 [skip ci]

# [6.0.0](v5.0.6...v6.0.0) (2021-01-26)

### Bug Fixes

* **@postdfm/dfm2ast:** concat to existing array rather than constructing new one ([8cc5dcd](8cc5dcd)), closes [#104](#104)
* **@postdfm/dfm2ast:** fixed parser to interpret nameless object correctly ([80633d0](80633d0)), closes [#180](#180)
* **@postdfm/plugin:** changed from SyncWaterfallHook to SyncHook ([772c69b](772c69b))
* set node minimum version to 8.3.0 ([9853a00](9853a00))

### Features

* **@postdfm/plugin:** added @postdfm/plugin ([ec48a72](ec48a72)), closes [#198](#198)
* **@postdfm/plugin:** added after hooks ([536e6f4](536e6f4))
* **@postdfm/transform:** added @postdfm/transform ([0ca5179](0ca5179)), closes [#112](#112)
* **postdfm:** update postdfm to use @postdfm/plugin and @postdfm/transform ([04d5757](04d5757))

### BREAKING CHANGES

* **@postdfm/dfm2ast:** Nameless objects will now define the type and leave the name undefined
* **postdfm:** postdfm no longer accepts the transformer option. Instead, postdfm will accept
plugins that extend the class available in the new @postdfm/transform package.
* set node minimum version to 8.3.0

packages/@postdfm/ast/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@postdfm/ast",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Abstract Syntax Tree classes for postdfm",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

packages/@postdfm/ast2dfm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@postdfm/ast2dfm",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Convert DFM Abstract Syntax Trees to a Delphi Form file",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -15,7 +15,7 @@
   },
   "homepage": "https://github.com/spiltcoffee/postdfm#readme",
   "dependencies": {
-    "@postdfm/ast": "^6.0.0-beta.5"
+    "@postdfm/ast": "^6.0.0"
   },
   "files": [
     "/dist",

packages/@postdfm/dfm2ast/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@postdfm/dfm2ast",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Convert Delphi Form files to an Abstract Syntax Tree",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -16,7 +16,7 @@
   },
   "homepage": "https://github.com/spiltcoffee/postdfm#readme",
   "dependencies": {
-    "@postdfm/ast": "^6.0.0-beta.5",
+    "@postdfm/ast": "^6.0.0",
     "nearley": "^2.19.4"
   },
   "files": [

packages/@postdfm/plugin/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@postdfm/plugin",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Provides structure and utilities for making plugins that can modify a postdfm AST.",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -15,7 +15,7 @@
   },
   "homepage": "https://github.com/spiltcoffee/postdfm#readme",
   "dependencies": {
-    "@postdfm/ast": "^6.0.0-beta.5",
+    "@postdfm/ast": "^6.0.0",
     "tapable": "^2.2.0"
   },
   "files": [

packages/@postdfm/transform/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@postdfm/transform",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Iterates a Delphi Form Abstract Syntax Tree, allowing modification via Hooks",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -15,8 +15,8 @@
   },
   "homepage": "https://github.com/spiltcoffee/postdfm#readme",
   "dependencies": {
-    "@postdfm/ast": "^6.0.0-beta.5",
-    "@postdfm/plugin": "^6.0.0-beta.5"
+    "@postdfm/ast": "^6.0.0",
+    "@postdfm/plugin": "^6.0.0"
   },
   "files": [
     "/dist",

packages/postdfm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "postdfm",
-  "version": "6.0.0-beta.5",
+  "version": "6.0.0",
   "description": "Provides an API for easily transforming Delphi Forms",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
@@ -26,10 +26,10 @@
   },
   "homepage": "https://github.com/spiltcoffee/postdfm#readme",
   "dependencies": {
-    "@postdfm/ast2dfm": "^6.0.0-beta.5",
-    "@postdfm/dfm2ast": "^6.0.0-beta.5",
-    "@postdfm/plugin": "^6.0.0-beta.5",
-    "@postdfm/transform": "^6.0.0-beta.5"
+    "@postdfm/ast2dfm": "^6.0.0",
+    "@postdfm/dfm2ast": "^6.0.0",
+    "@postdfm/plugin": "^6.0.0",
+    "@postdfm/transform": "^6.0.0"
   },
   "files": [
     "dist/",