v1.5.0

• feat: support underscores in numbers 51a5acb
• fix: add leading space 6e1f512
• chore(readme): add logo 831b1a3
• chore(logo): calc-logo.svg 5fbdc91
• docs(readme): update record 5b21ccc
• style(tslint): ban workspace.showMessage a3f1e74

v1.4.0...v1.5.0