# Changelog

Terse, newest first. Versions are git tags.

## 0.1.4 — 2026-08-27

### Added
- `-svg` writes a meteogram: temperature with the apparent temperature
  dashed, precipitation bars with the probability on its own right-hand axis,
  and humidity — three panels over one time axis, with shaded night bands,
  faint hourly gridlines, bold dates and a rule at each midnight. Written as
  markup, so there is no plotting library and no gnuplot; it works wherever the
  binary does. The meteogram requests the fields it needs regardless of
  `columns=`.
- `-o PATH` / `-out PATH` writes to a file or a directory instead of standard
  output, for the table as well as the meteogram. A directory gets a filename
  generated from the place and the date, so a daily run does not overwrite
  yesterday. Colour is omitted when writing to a file.

## 0.1.3 — 2026-08-25

### Fixed
- Chart axis labels no longer repeat on a narrow range. A 1.2 degree span
  rounded to whole degrees put "15" against two different rows, so the axis
  said they were the same temperature. Below a 2 degree span the labels carry
  one decimal, falling back to whole degrees where a decimal would not fit the
  gutter.

## 0.1.2 — 2026-08-25

### Changed
- Examples, tests and recorded fixtures now use Kraków rather than the author's
  home village. One fixture was a GUGiK address lookup containing a house
  number, postal code and metre-precision coordinates.
- Documentation drift now fails `make ci`: tests assert that every flag reaches
  `-h`, the README and the man page, that every key in the generated config is
  documented, and that every column name is explained in both.
- The README's example output is generated from the binary rather than written
  by hand, and its flag list is complete.

## 0.1.1 — 2026-08-25

### Added
- Man page, `man/prognosis.1`, installed by `make install`.
- **Custom columns.** Any field the Open-Meteo forecast or air-quality APIs
  expose can be displayed by declaring it in the config:
  `column.birch = air:birch_pollen`, then `columns=hour,temp,birch`. Optional
  `label.`, `width.`, `decimals.` and `suffix.` keys. An air-quality column
  costs one extra request, made only when one is declared.
- `humidity` column added to the default column set.
- `-version`, and the version is stamped into the binary at build time.
- `-weather` (forecast only), `-no-warnings`, `-ascii` (GSM-7 safe output for
  SMS).
- `make lint` checks the man page renders without groff warnings, and tests
  assert that every flag appears in `-h`, the README and the man page, that
  every config key the generated file contains is documented, and that every
  column name is explained in both. Documentation drift now fails `make ci`
  rather than reaching a release. `make release`, `make install-hooks`, and cross-compilation
  for six platforms.

### Changed
- **Pollen selection no longer privileges grass.** A species named in `pollen=`
  is shown even at zero; `pollen=all` shows only what is present. Previously
  grass was special-cased and always displayed, which forced it on someone
  allergic to birch while hiding theirs. `-pollen` sets it for one run.
- **`~/.wegorc` is no longer read.** prognosis is standalone: set `location=`
  in its own config, or pass `-l`. Previously it fell back to wego's config,
  which made it useless without wego installed.
- `make install` installs the man page too, and honours `PREFIX` and `DESTDIR`
  for packaging.
- Temperature colours are compared in Celsius whatever the display units, so
  `units=imperial` no longer reports 85F as the "IMGW would warn" red.

### Fixed
- Pollen values the API withholds are absent rather than zero, so a location
  outside Europe no longer reports a confident `grass 0.0 none`.
- Flags after a positional argument are parsed rather than swallowed into the
  place name.

## 0.1.0 — 2026-08-14

Initial release. Go implementation replacing an earlier Python one.

- Hourly table, temperature chart, day summary, sun times, pollen with bands
  sourced from Polish clinical thresholds.
- Official IMGW warnings filtered to your powiat via GUGiK, with the failure
  case ("could not check") kept distinct from "none in force".
- Temperature colours anchored to IMGW's own warning criteria.
- Configurable columns, `en`/`pl` display languages, three icon sets.
- No API key, no third-party Go modules.