Add more extensions for GS64

[gcotelli]

No description provided.

[codecov]

Codecov Report

Merging #93 (d6ffddd) into release-candidate (57bcee7) will not change coverage.
The diff coverage is 100.00%.

@@                 Coverage Diff                 @@
##           release-candidate       #93   +/-   ##
===================================================
  Coverage             100.00%   100.00%           
===================================================
  Files                     73        76    +3     
  Lines                   6812      6865   +53     
===================================================
+ Hits                    6812      6865   +53     

Flag	Coverage Δ
unit	100.00% <100.00%> (ø)

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

Files Changed	Coverage Δ
...ollections-Tests/CollectionExtensionsTest.class.st	100.00% <100.00%> (ø)
...taprogramming-Extensions/LanguagePlatform.class.st	100.00% <100.00%> (ø)
...rogramming-Pharo-Extensions/PharoPlatform.class.st	100.00% <100.00%> (ø)
...etaprogramming-Tests/LanguagePlatformTest.class.st	100.00% <100.00%> (ø)