eggla v1.0.4

Documentation

• In README.Rmd,
  • docs: replace previous instructions with instructions using "lock" file for dependencies.
• In vignettes/,
  • docs: remove outdated email address.

What's Changed

• docs: update install instructions and rm outdated email by @mcanouil in #129

Full Changelog: v1.0.3...v1.0.4