switch EMPTY_DICT_BYTES to lazy_static, closes #2

[kafonek]

Current dependencies on/for this PR:

• main
  • PR #6 👈
  • PR #7
    • PR #8
    • PR #9

This stack of pull requests is managed by Graphite.

[kafonek]

Merge activity

• Nov 27, 3:45 PM: @kafonek started a stack merge that includes this pull request via Graphite.
• Nov 27, 3:45 PM: @kafonek merged this pull request with Graphite.