Updated CHANGELOG. Removed tests.

CHANGELOG.md

-## [0.0.1] - TODO: Add release date.
+## [0.9.0]
 
-* TODO: Describe initial release.
+* Initial release.
+* Added basic functions (cut paper, write line, ...)
+* Text styling (bold, underline, reverted, ...)
+* Text align
+* Table row printing (up to 12 columns)
\ No newline at end of file

test/esc_pos_printer_test.dart

-// import 'package:flutter_test/flutter_test.dart';
-// import 'package:esc_pos_printer/esc_pos_printer.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:esc_pos_printer/esc_pos_printer.dart';
 
 void main() {
-  // test('adds one to input values', () {
-  // final calculator = Calculator();
-  // expect(calculator.addOne(2), 3);
-  // expect(calculator.addOne(-7), -6);
-  // expect(calculator.addOne(0), 1);
-  // expect(() => calculator.addOne(null), throwsNoSuchMethodError);
-  // });
+  test('Tests not implemented', () {
+    expect(1, 1);
+  });
 }