quantMSImageR 0.99.4

Transitions are now matched to the ion library at unit resolution (mz_tolerance default 0.4, was 0.05). A triple quadrupole running MRM selects Q1 and Q3 at unit resolution, so a product ion written as 308.1 and one written as 308.3 are the same measurement; matching more tightly than the instrument resolves made annotation depend on how many decimal places were typed into the library. Applies to read_mrm(), build_feature_meta(), align_features() and bind_panels(). Precursor and product must still both agree.
ambiguity gains a "combine" mode, now the default. A transition matching several library entries is named for all of them, joined with " || " -- e.g. "LTC4 || 14_15-LTC4", isomers 0.03 Da apart on the product ion that no acquisition can separate. Annotation columns come from the closest entry. "error", "warn" and "nearest" are unchanged.
Combining across entries of differing Type is refused: one feature cannot be both analyte and internal standard.
Fixed the show methods export, which was declared in NAMESPACE without the generic being imported from methods.

quantMSImageR 0.99.3

Fixed run_example() / generate_txt_images(): trimming empty background borders no longer removes the last background pixels when the tissue fills a perfect rectangle, which had left int2snr() with nothing to reference.
Fixed the HTML report for single-acquisition studies: the run-to-group map is now built in an always-run chunk, so single-sample reports render.

Report heatmap now shows the sample-group colour legend (the group colour bar was previously drawn without a key). Legends are merged into one column, which also avoids a ComplexHeatmap drawing error seen with multiple annotations.

Added show() methods for the calibrationInfo, tissueInfo and quant_MSImagingExperiment classes.
Enabled R-universe build checking.
Vignette, help-page and package-title clarifications; documentation tidy-up.

First Bioconductor submission.
Added per-analyte SNR overrides (snr_overrides) and per-report SNR_used reporting.
Added bind_panels() for coordinate-matched merging of cross-panel / cross-polarity acquisitions of the same tissue; bind_polarities() is now a deprecated alias.
Added build_feature_meta() to join ion-library metadata to features by m/z.
Coordinate-aware tissue masks (select_tissue_pixels() now writes x/y), portable across MRM panels of the same sample.
Consolidated read_mrm() to handle single- and multi-analyte imaging folders.
Calibration (summarise_cal_levels(), create_cal_curve(), int2conc()) can be driven from the study YAML via a calibration: block.