Allow brick/math 0.18

[delolmo]

Summary

brick/math 0.18.0 was recently released, but the current composer.json constraint (~0.15.0 || ~0.16.0 || ~0.17.0) excludes it, blocking installation of brick/money alongside brick/math 0.18.

This widens the constraint to allow ~0.18.0.

Compatibility

The breaking changes in brick/math 0.18 do not affect this library:

• BigInteger::fromBytes() parameter rename — only affects named-argument callers; not used here.
• Stricter of() parsing and exponent-overflow exception changes — no affected usage.
• Narrowed static-analysis return types — no impact.

Verification (with brick/math 0.18.0 installed)

• PHPUnit: 935 tests, 1926 assertions — all passing.
• PHPStan: no errors.

Also updated the pinned RoundingMode link in the README from 0.17.0 to 0.18.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.96%. Comparing base (c1dd3a6) to head (75ec5bb).

Additional details and impacted files

@@            Coverage Diff            @@
##               main     #129   +/-   ##
=========================================
  Coverage     94.96%   94.96%           
  Complexity      452      452           
=========================================
  Files            43       43           
  Lines          1151     1151           
=========================================
  Hits           1093     1093           
  Misses           58       58           

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[BenMorel]

Thank you, @delolmo!

[simPod]

@BenMorel can we get a release with this?

[BenMorel]

@simPod I have a few more features / BC breaks planned before I release v0.14; hopefully I'll be able to take care of this over the weekend.

[BenMorel]

These features are taking more time than expected, they'll be postponed to v0.15.

Version 0.14.0 released!