v1.4

What's Changed

• Add Command Summary to HelpWindow by @janjanchen in #147
• Update images and terminal instructions by @chunweii in #162
• Refactor classes by @chunweii in #165
• Refactor test by @xiangjunn in #194
• Further refactoring by @chunweii in #215
• Add test cases for view commands and parsers by @janjanchen in #212
• Fix PE-D bugs (giang) by @pcgiang in #214
• Fix undo bug for find and view by @pcgiang in #219
• Make link immutable by @xiangjunn in #218
• Add redo help summary by @chunweii in #221
• Fix mark and unmark commands by @Gordon25 in #216
• Test cases for ModelManager and ModelDisplaySetting by @pcgiang in #223
• Add test cases for model.event and model.contact package by @janjanchen in #226
• Add test cases for parser and logic manager by @xiangjunn in #225
• Revamp tests for storage, logic, model by @chunweii in #224
• Fix the esort and emark bug by @chunweii in #231
• Fix bugs found during manual testing by @xiangjunn in #233
• DG enhancements by @chunweii in #217
• UG final v1.4 by @chunweii in #236
• Fix hyperlinks for italics by @chunweii in #246
• Add PPP

Full Changelog: v1.3b...v1.4