Changelog

Source: NEWS.md

SegmentR 0.1.0

Breaking changes

• Replaced %>% (magrittr) with |> (base R native pipe) throughout all source code, tests, and vignettes. R >= 4.2 is now required.
• The magrittr pipe is no longer re-exported (R/utils-pipe.R and man/pipe.Rd removed).
• make_DTMs(): the in_parallel argument is deprecated and ignored. term_counts_par() has been removed.
• fit_LDAs(): parallelism now uses mirai via purrr::in_parallel() instead of future/furrr.

Bug fixes

• Fixed stopword removal in make_DTMs(): the buggy purrr::reduce() pre-tokenisation block has been replaced with a post-tokenisation filter, producing correct document-term matrices.

Dependency changes

• Dropped magrittr, scales, future, and furrr from Imports (14 -> 11).
• Moved shiny, bslib, DT, ggraph, and tidygraph to Suggests with runtime requireNamespace() guards.
• Added mirai to Suggests for optional parallelism.
• Bumped purrr minimum to >= 1.2.0.

Performance

• topics_rename(): replaced O(k*n) map2_dfr with O(n) named-vector lookup.
• coherence_segmentr(): uses topicmodels::posterior()$terms directly.
• Replaced deprecated tidyverse verbs: spread -> pivot_wider, top_n -> slice_max, filter_at -> filter(if_all()).
• Replaced scales::wrap_format and scales::comma with lightweight local helpers using stringr and format().

Tests

• Added snapshot regression tests for make_DTMs, fit_LDAs, explore_LDAs, and the full topic pipeline.
• Added skip_if_not_installed() guards for optional dependencies in tests.

CI

• Bumped GitHub Actions to v4, added --no-build-vignettes and --no-manual to R CMD check, removed manual install.packages() blocks.