Bump tstorage from v0.2.0 to v0.2.2

[nakabonne]

Fixes #110

[codecov-commenter]

Codecov Report

Merging #113 (ba0e615) into master (422a522) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #113   +/-   ##
=======================================
  Coverage   62.30%   62.30%           
=======================================
  Files          11       11           
  Lines         716      716           
=======================================
  Hits          446      446           
  Misses        235      235           
  Partials       35       35           

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