0.5.0 - Lots of bugfixes and a couple of features

What's Changed

• feat: reduce default animation balls to 1 per track by @pinin4fjords in #95
• feat: support multi-line station labels via \n by @pinin4fjords in #97
• fix: dark-mode CSS for transparent-background SVGs by @pinin4fjords in #103
• Render script discovers all .mmd files with deduplication by @pinin4fjords in #107
• fix: TB section exit port mirrors entry-side gap by @pinin4fjords in #114
• fix: align exit-entry port pairs toward downstream stations by @pinin4fjords in #116
• feat: straight-through diamond fork-joins by @pinin4fjords in #120
• fix: improve vertical centering of non-station label text by @pinin4fjords in #121
• fix: centre bubble stations on their flat segments by @pinin4fjords in #122
• fix: offset bypass gap2 vertical to avoid overlap with L-shape routes by @pinin4fjords in #123
• fix: push ports away from terminus icons (#117) by @pinin4fjords in #124
• fix: bias diagonal toward fork in fork+join edges by @pinin4fjords in #128
• chore: add before/after comparison to fix-issue skill by @pinin4fjords in #130
• fix: improve label placement and resolve layout regressions by @pinin4fjords in #131
• fix: separate overlapping bypass lines on narrow vertical segments by @pinin4fjords in #134
• fix: center stations within sections after exit gap by @pinin4fjords in #135
• fix: only center exit gap for single-layer sections by @pinin4fjords in #138
• fix: suppress spurious fork gaps in single-track sections by @pinin4fjords in #139
• chore: update render-topologies skill to diff against main by @pinin4fjords in #140
• chore: tidy fix-issue and render-topologies skills by @pinin4fjords in #143
• feat: support multiple file icons per station by @pinin4fjords in #145
• fix: shift LR/RL stations away from perpendicular entry ports (#99) by @pinin4fjords in #147
• feat: add epitopeprediction and hlatyping examples by @pinin4fjords in #144
• fix: conditional exit gap and LR label clearance by @pinin4fjords in #149
• fix: adapt x_offset when multi-icon terminus clips canvas edge by @pinin4fjords in #151
• fix: terminus icon obstacles in label collision avoidance by @pinin4fjords in #152
• feat: configurable section spacing with safe minimums by @pinin4fjords in #153
• fix: widen fork-join bubbles for labels and flip labels near exit ports by @pinin4fjords in #154
• chore: release 0.5.0 by @pinin4fjords in #155

Full Changelog: 0.4.7...0.5.0