Materialized without topic name

[dacreify]

Summary

Fix for #262 by using alternate means of constructing a Materialized

Checklist

• tests
• updated CHANGELOG (the "unreleased" section)

[codecov]

Codecov Report

Merging #263 into master will decrease coverage by 0.36%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master     #263      +/-   ##
==========================================
- Coverage   81.26%   80.89%   -0.37%     
==========================================
  Files          41       41              
  Lines        2562     2565       +3     
  Branches      149      149              
==========================================
- Hits         2082     2075       -7     
- Misses        331      341      +10     
  Partials      149      149              

Impacted Files	Coverage Δ
src/jackdaw/streams/interop.clj	81.33% <83.33%> (+0.77%)	⬆️
src/jackdaw/serdes/edn2.clj	45.45% <0.00%> (-45.46%)	⬇️

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[cddr]

LGTM

[dacreify]

Superseded by: #335