Update to 1.4.1

Changelog:

• Fixes a problem with close-tab action in the context menu
• The keybindings in the wizard are now displayed in form of a list
• Fixed an issue which broke the transparency feature after changing the color scheme
• Fixed an issue that prevented the initial tab title from being correctly set
• Tilda now supports a new command line option to specify the configuration file
• The 'Tab Position' option has been moved to appearance section in the wizard
• New option 'Expand Tabs' causes tabs in the tilda window to fill all available horizontal space
• New option 'Show Single Tab' to show the tab bar also when only a single tab is open
• Tilda can now be configured to show a confirmation dialog when closing a tab or when when tilda is closed
• Tilda now knows a new color scheme called 'Snazzy'
• The tab title learned more options to configure behavior of long tab tiles
• The option for double buffering has long been deprecated and was removed in this release