bump version to 1.0.3

[petrelharp]

I'm going to do a minor release, mostly to get the json+struct stuff out there (following these docs).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.67%. Comparing base (40698f5) to head (61eb350).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3456   +/-   ##
=======================================
  Coverage   91.67%   91.67%           
=======================================
  Files          38       38           
  Lines       32186    32186           
  Branches     5150     5150           
=======================================
  Hits        29505    29505           
  Misses       2348     2348           
  Partials      333      333           

Flag	Coverage Δ
C	82.23% <ø> (ø)
c-python	77.54% <ø> (ø)
python-tests	96.40% <100.00%> (ø)
python-tests-no-jit	33.20% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
Python API	98.70% <100.00%> (ø)
Python C interface	91.23% <ø> (ø)
C library	91.24% <ø> (ø)

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[hyanwong]

SGTM!

[hyanwong]

You can probably make a new [1.0.4] - 2026-XX-XX header above, and move "In development" there, right?

[petrelharp]

that happens after the release: https://github.com/tskit-dev/.github/blob/main/repo_administration.md#releases

[hyanwong]

Ah, OK, sorry.

[petrelharp]

And, I misunderstood your comment - you pointed out the problem here, but I thought you just meant "let's make a new header now". Nice catch!

[hyanwong]

LGTM, modulo a changelog comment