v0.4.1

PlutoTeachingTools v0.4.1

Diff since v0.4.0

• Add French
• Improve language support
• Update deprecations

Merged pull requests:

• Add French translation (#63) (@blegat)
• i18n code cleanup (#66) (@fonsp)

Closed issues:

• What to keep/deprecate now that Pluto has a built-in presentation mode button (#59)
• Deprecate Foldable for PlutoUI.details, TwoColumn and ThreeColumn for Columns (#61)