v0.2.0

Type-faithful calculator MCP server — second release. Install with uvx mcp-abacus.

New language functions

• exp, log2, cbrt
• floor, ceil, round, trunc — each taking an optional ndigits
• asin, acos, atan
• Optional-argument arity for trailing defaulted parameters
• Bare pi and e usable as reserved constants

calculate & solver

• calculate returns every output line of a multi-line program, not just the last
• solver gains a Brent parabolic minimiser (selectable via algorithm)
• solver requires min_fixed_point_precision in fixed-point mode (avoids silently flooring the unknown to integers)
• solver snaps drifted floating-point answers onto clean roundings

Exactness & diagnostics

• Fixed-point quantization error is stored and surfaced
• analyze shows a per-node rounding <residual> ≈ <approx> fragment (renamed from error to avoid colliding with the failure channel)
• Caller-supplied inexact-handling policy with abort-on-inexact, plus a human-readable abort message

MCP surface & metadata

• Server instructions; every tool parameter described in its inputSchema; help's section as a schema enum
• Language reference exposed as MCP resources
• Documented the full set of mode aliases (incl. decimal → fixed-point); bidirectional tool cross-references
• Trove classifiers, rational keyword, glama.json

Full changelog: v0.1.0...v0.2.0