Add figures for some common mathematical symbols (#62)

Author: ehmicky

index.d.ts

@@ -47,6 +47,12 @@ declare const figureSet: {
 	readonly arrowRight: string;
 	readonly arrowLeftRight: string;
 	readonly arrowUpDown: string;
+	readonly almostEqual: string;
+	readonly notEqual: string;
+	readonly lessOrEqual: string;
+	readonly greaterOrEqual: string;
+	readonly identical: string;
+	readonly infinity: string;
 	readonly subscriptZero: string;
 	readonly subscriptOne: string;
 	readonly subscriptTwo: string;

index.js

@@ -25,6 +25,12 @@ const common = {
 	arrowRight: '→',
 	arrowLeftRight: '↔',
 	arrowUpDown: '↕',
+	almostEqual: '≈',
+	notEqual: '≠',
+	lessOrEqual: '≤',
+	greaterOrEqual: '≥',
+	identical: '≡',
+	infinity: '∞',
 	subscriptZero: '₀',
 	subscriptOne: '₁',
 	subscriptTwo: '₂',

readme.md

@@ -111,6 +111,12 @@ Symbols to use when running on Windows.
 | arrowRight         |      →      |    →    |
 | arrowLeftRight     |      ↔      |    ↔    |
 | arrowUpDown        |      ↕      |    ↕    |
+| almostEqual        |      ≈      |    ≈    |
+| notEqual           |      ≠      |    ≠    |
+| lessOrEqual        |      ≤      |    ≤    |
+| greaterOrEqual     |      ≥      |    ≥    |
+| identical          |      ≡      |    ≡    |
+| infinity           |      ∞      |    ∞    |
 | radioOn            |      ◉      |   (*)   |
 | radioOff           |      ◯      |   ( )   |
 | checkboxOn         |      ☒      |   [×]   |