message: added title tooltip to CollapsableControls
diff: @@ -96,7 +96,7 @@ export abstract class CollapsableControls<P = {}, S = {}, SS = {}> extends Plugi
  return <div className={wrapClass}>
  <div className='msp-transform-header'>
  <Button icon={this.state.brand ? void 0 : this.state.isCollapsed ? 'expand' : 'collapse'} noOverflow onClick={this.toggleCollapsed}
  - className={this.state.brand ? `msp-transform-header-brand msp-transform-header-brand-${this.state.brand.accent}` : void 0}>
  + className={this.state.brand ? `msp-transform-header-brand msp-transform-header-brand-${this.state.brand.accent}` : void 0} title={`Click to ${this.state.isCollapsed ? 'expand' : 'collapse'}`}>
  {this.state.brand && <div className={`msp-accent-bg-${this.state.brand.accent}`}>{this.state.brand.name}</div>}
  {this.state.header}
  <small style={{ margin: '0 6px' }}>{this.state.isCollapsed ? '' : this.state.description}</small>
  