[DOC]: Improve documentation

[synchon]

• [x] description of feature/fix
• [x] tests added/passed
• [x] add an entry for the latest changes

This PR improves the documentation and in particular introduces space transformation via SpaceWarper and adds information about creating custom Preprocessors.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.15%. Comparing base (382eea7) to head (3c847a2).

Additional details and impacted files

[](https://app.codecov.io/gh/juaml/junifer/pull/317?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=juaml) ```diff @@ Coverage Diff @@ ## main #317 +/- ## ======================================= Coverage 88.15% 88.15% ======================================= Files 111 111 Lines 4820 4820 Branches 957 957 ======================================= Hits 4249 4249 Misses 417 417 Partials 154 154 ``` | [Flag](https://app.codecov.io/gh/juaml/junifer/pull/317/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=juaml) | Coverage Δ | | |---|---|---| | [docs](https://app.codecov.io/gh/juaml/junifer/pull/317/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=juaml) | `100.00% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=juaml#carryforward-flags-in-the-pull-request-comment) to find out more.

[github-actions[bot]]

PR Preview Action v1.4.7 :---: Preview removed because the pull request was closed. 2024-04-02 08:04 UTC