Release Explore 0.4.0

[cebarboza]

First release:

• [ ] usethis::use_cran_comments()
• [ ] Update (aspirational) install instructions in README
• [ ] Proofread Title: and Description:
• [ ] Check that all exported functions have @return and @examples
• [ ] Check that Authors@R: includes a copyright holder (role 'cph')
• [ ] Check licensing of included files
• [ ] Review https://github.com/DavisVaughan/extrachecks

Prepare for release:

• [ ] git pull
• [ ] Check if any deprecation processes should be advanced, as described in Gradual deprecation
• [ ] devtools::build_readme()
• [ ] urlchecker::url_check()
• [ ] devtools::check(remote = TRUE, manual = TRUE)
• [ ] devtools::check_win_devel()
• [ ] rhub::check_for_cran()
• [ ] rhub::check(platform = 'ubuntu-rchk')
• [ ] rhub::check_with_sanitizers()
• [ ] git push
• [ ] Draft blog post

Submit to CRAN:

• [ ] usethis::use_version('minor')
• [ ] devtools::submit_cran()
• [ ] Approve email

Wait for CRAN...

• [ ] Accepted :tada:
• [ ] git push
• [ ] usethis::use_github_release()
• [ ] usethis::use_dev_version()
• [ ] git push
• [ ] Finish blog post
• [ ] Tweet
• [ ] Add link to blog post in pkgdown news menu

[AniekMarkus]

• [ ] Check if this is correctly checkes: input trainExplore is either 1) settings_path with or without train_data + with or without other parameters OR 2) mandatory train_data with or without other parameters
• [ ] If input train_data = NULL -> should be checked if this file exists from settings_path
• [ ] Fix difference input names snake_case and camelCase
• [ ] Add extra parameters to R package: SENSITIVITY, PPV, NPV, F1SCORE
• [ ] Specify which options for MAXIMIZE parameter = SENSITIVITY, SPECIFICITY, ACCURACY, PPV, NPV, BALANCEDACCURACY, F1SCORE
• [ ] Maybe can remove dependency caret, pracma?