0.12.20 Metadata made parseable by the plugin repository (a stray
percent sign rejected the 0.12.19 upload); the release check now
parses it the same way the repository does. A run's output layers load
as one group named for the output folder and run, so successive runs
stay organised in the layers pane.
0.12.19 The run dialog, the message bar and the guide all point at the
Isobenefit tab of the Log Messages panel, where a running simulation
reports per-stage progress and warnings.
0.12.18 Post-processing candidates run about twice as fast again
(component labelling joins the walk field in the engine; the placement
stack caches its columns), and the progress bar now gives the
selection stage the larger share of the bar it actually occupies.
0.12.17 Post-processing is engine-accelerated and barrier-aware: the
walk field is computed by the Rust engine (a large window
post-processes in under a minute), and scoring walks now detour around
water and carved corridors exactly as growth does (they previously
crossed them). Requires engine 0.12.17; the plugin prompts for the
upgrade.
0.12.16 With an OSM download in the project, the run dialog pre-fills
the output folder as a scenarios folder beside the downloaded data,
numbered upward when earlier runs exist. A chosen folder is never
overwritten.
0.12.15 One distance model: bounded grid walks everywhere, in growth
and in scoring. Street-network routing removed (a new settlement has
no streets yet, so a network metric measured new and existing fabric
on different terms); the streets layer stays as map context and the
source of carved barrier corridors. Centre placement is
settlement-local: a centre is positioned only by homes in its own
contiguous settlement, so it cannot be dragged to a periphery cell
facing a green gap. Scenario panels colour slope-excluded land tan,
distinct from water and corridors. Plugin unload no longer errors
after a finished run.
0.12.14 Centre refinement caches walk fields by coordinate across the
whole ensemble: post-processing a many-centre window drops from ~40 s
to ~3 s per candidate with identical results. Selection progress logs
every candidate.
0.12.13 The post-processing selection reports progress, honours
Cancel, and runs in two phases when a street network is supplied
(every run ranked by the grid walk, the leaders re-scored along the
network), so large windows finish in minutes rather than sitting
silent near the end of the bar.
0.12.12 Defaults grounded in practice: 800 m centre walk (a ten-minute
walk) and 400 m green walk (the WHO/Natural England everyday-green
reach); the minimum settlement is now a population (default 1,000
people) rather than an area; new development must earn its own
mixed-use centres (a nearby existing centre no longer stands in, so
growth cannot sprawl centre-free along existing fabric); scenario
downloads fixed on the website; one consolidated Dnipro scenario;
distances, barriers and station handling documented in the guide.
0.12.11 Growth no longer stands off carved road, rail and river
corridors: a green strip bounded by unbuildable land is exempt from
the minimum-span rule, so development can build up to a barrier while
green corridors between developments stay protected. Seeding diagrams
and probability mechanics documented on the website; growth
troubleshooting added to the guide.
0.12.10 First public beta, for QGIS 4. Earlier development history is
recorded in the repository.

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