feat(full-text-search): make index Unicode safe and improve fuzzy performance (#55)

* inverted index uses Unicode character (UTF-32 aware) of a string instead a single character
* fuzzy search uses a DFA
* refactor many routines/loops
* improve many typings

Author: Viatorus

package-lock.json

@@ -9,6 +9,7 @@
     "lint:fix": "tslint -p 'tsconfig.json' -c 'config/tslint.json' --fix",
     "test": "npm run test:web && npm run test:node && npm run coverage",
     "test:web": "karma start config/karma.config.js --single-run",
+    "test:web:watch": "karma start config/karma.config.js",
     "test:node": "nyc --report-dir coverage/node jasmine --config='config/jasmine.json'",
     "coverage": "istanbul report html lcov json text-summary",
     "docs": "typedoc packages/",
@@ -32,7 +33,7 @@
   },
   "homepage": "https://lokijs-forge.github.io/LokiJS2",
   "devDependencies": {
-    "@types/elasticsearch": "^5.0.17",
+    "@types/elasticsearch": "^5.0.18",
     "@types/jasmine": "^2.8.2",
     "@types/jasmine-expect": "^3.6.1",
     "@types/node": "^8.0.53",
@@ -41,28 +42,28 @@
     "conventional-changelog": "^1.1.7",
     "coveralls": "^2.13.3",
     "elasticsearch": "^13.3.1",
-    "eslint": "^4.11.0",
+    "eslint": "^4.12.1",
     "eslint-loader": "^1.9.0",
     "istanbul": "^0.4.5",
     "istanbul-instrumenter-loader": "^3.0.0",
     "jasmine": "^2.8.0",
     "karma": "^1.7.1",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage-istanbul-reporter": "^1.3.0",
-    "karma-jasmine": "^1.1.0",
+    "karma-jasmine": "^1.1.1",
     "karma-jasmine-matchers": "^3.7.0",
     "karma-webpack": "^2.0.6",
-    "nyc": "^11.2.1",
+    "nyc": "^11.4.0",
     "source-map-loader": "^0.2.3",
     "ts-loader": "^2.3.7",
     "ts-node": "^3.3.0",
     "tslint": "^5.7.0",
     "tslint-eslint-rules": "^4.1.1",
     "tslint-loader": "^3.5.3",
     "typedoc": "^0.9.0",
-    "typescript": "^2.5.3",
-    "uglify-es": "^3.1.10",
+    "typescript": "^2.6.2",
+    "uglify-es": "^3.2.0",
     "vrsource-tslint-rules": "^5.8.0",
-    "webpack": "^3.7.1"
+    "webpack": "^3.9.1"
   }
 }