* Remove `err` and `warn`, keep `errx` and `warnx`, using them in RGBGFX too
* Separate RGBGFX and RGBLINK warnings/errors from main options
* Separate `report` function into `error` and `fatal` messages
* Implicit newlines for most RGBASM errors
The original algorithm makes a simplifying assumption that one
proto-palette does not fully contain another, and we have no
particular reason to violate this condition.
ACT palette files support a transparent color index, but RGBGFX
cannot apply *one* such transparent color; it would need every
palette's first color to be transparent. Also ACT files tend to
say the first color is transparent anyway, which the user may
not have intended.
ACO palette files can specify version 2 color data, but it's
required to come after version 1 data, and the colors themselves
already exist in the earlier v1 data; v2 just adds UTF-16 names.
Thus, we do not need to be handling these data in those formats.
These fall into a few categories:
- `_unreachable()`
- Verbose print messages
- Errors that should never practically occur (alloc/read/write failure,
more than UINT32_MAX anonymous labels, etc)
This is primarily a correctness change, *not* a performance one.
The expected performance impact is minimal anyway.
The goal is to eliminate the use of platform-inconsistent floating-point operations
for this load-bearing task.
* Remove namespaces
* Prefer `bool operator==`, not `friend auto operator==`
* Prefer not to use `using`
* Use a `constexpr` function instead of a template for `flipTable`
The function only stopped at the end of the *arrays*,
not of *their used portions*!
This could cause false negatives one way or the other.
This appears not to affect the palette packing, since the packing algorithm
deals with them efficiently; but it should speed up processing slightly,
and as the test changes show, it also improves the UX of palette packing
error messages!
