broot v0.10.2

• colored status line
• better handling of errors when opening files externally
• spinner replaced with an explicit text
• :parent no longer keeps the filter (this was too confusing)
• new :up command, focusing the parent of the current tree root
• $PAGER used in default config. Fix #20
• default conf links to the white background skin published on web site
• new "default" entry in skin, to define a global background replacing the terminal's one