v1.2.6

Fixed

• Negative values that round to zero (e.g. -0.0 or -0.4 with round: 0) now display as 0 instead of -0. Fixes issue #10 reported by @Yobby.

Test coverage (11 tests passing):

• -0.0 directly (the reported issue)
• -0.4 with round: 0 (rounds to -0 without fix)
• Normal negative values that don't round to zero (unaffected)
• Positive values, no-rounding configs, and non-numeric passthrough (no regressions)