Update change log to document "emerging lineage"
@@ -5,6 +5,8 @@ We also use this change log to document new features that maintain backward comp
## New features since last version update
+- 20 April 2021: Surface emerging lineage as a colorby. This replaces the rather stale color by "Emerging Clade" with a new color by "Emerging Lineage". This focuses on PANGO lineages that are of interest triangulated by [CoVariants](https://covariants.org/), [PANGO](https://cov-lineages.org/) international lineage reports, [CDC](https://www.cdc.gov/coronavirus/2019-ncov/cases-updates/variant-surveillance/variant-info.html) VUIs and VOCs and [PHE](https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/975742/Variants_of_Concern_VOC_Technical_Briefing_8_England.pdf) VUIs and VOCs. The intention is for the listing at `emerging_lineages.tsv` to be updated frequently with new lineages added and no longer interesting lineages dropped. [#609](https://github.com/nextstrain/ncov/pull/609)
+
- 12 April 2021: Calculate current clade frequency and logistic growth rate across nodes in the phylogeny. This produces a new `logistic_growth.json` file and uses this file to add a coloring the final Auspice JSON. Implementation choices are discussed in PR [#595](https://github.com/nextstrain/ncov/pull/595).
- 12 April 2021: Annotate Pangolin lineages per build in a `pangolineages.json` file and final Auspice JSON by adding `run_pangolin: true` to the top-level workflow config (`builds.yaml`). **Note: this annotation only works when running the workflow with Snakemake's `--use-conda` flag or if your environment has [Pangolin installed](https://github.com/cov-lineages/pangolin).** [#593](https://github.com/nextstrain/ncov/pull/593)
