Removed support for .pkl files passed to add_font() + pickle module is no more used - close #345

[Lucas-C]

No description provided.

[Lucas-C]

[codecov]

Codecov Report

Merging #402 (d3115cb) into master (67c3abd) will increase coverage by 0.26%.
The diff coverage is 78.26%.

❗ Current head d3115cb differs from pull request most recent head bb4fabd. Consider uploading reports for the commit bb4fabd to get more accurate results

@@            Coverage Diff             @@
##           master     #402      +/-   ##
==========================================
+ Coverage   90.66%   90.92%   +0.26%     
==========================================
  Files          21       21              
  Lines        6168     6149      -19     
  Branches     1262     1257       -5     
==========================================
- Hits         5592     5591       -1     
+ Misses        331      313      -18     
  Partials      245      245              

Impacted Files	Coverage Δ
fpdf/fpdf.py	87.34% <78.26%> (+0.76%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 67c3abd...bb4fabd. Read the comment docs.