Ldapper v0.5.0

Ldapper has a new look, and its mark a new ink.

Plum and lavender

The window moves from aubergine and coral to a darker plum, with the panes
lifted a step above it rather than sunk below it. Depth comes from those steps
and from hairline edges — there are no drop shadows anywhere — and a faint
violet aurora sits behind the title bar.

Colour is rationed now, and each one means one thing:

• Lavender is the interface talking: pane headings, what is selected, the
  version in the status bar. A selected row is a lavender wash with a bar at
  its edge, where it used to be a solid coral block.
• Green is the one button to press on a screen — Search, Connect, Save —
  and a connection that is working. Nothing else is green, so the eye finds it.
• Ember is kept for errors and for deleting things.

Buttons and switches are rounded rectangles instead of pills. Text is a warm
bone rather than pure white, which glared on the dark plum. Inputs have a
visible edge, and a lavender ring when they have focus.

The mark

The same two levels of a tree and three nodes, now inked in a single gradient
from violet at the root to ember at the leaf. The app icon, the Windows icon,
the favicon and every raster size are regenerated from assets/icon.svg.

Nothing else changed

This release is visual only. No behaviour, no settings and no saved
connections are touched.

Verified

318 Go tests, 49 frontend tests and 37 integration tests. The screenshots in
the README are retaken from this build's interface.