**Added**
- Renamed modules and functions to be more readable and memorable.
- Divided the package into three main sections: preparation (`prep`), analysis (`analysis`), and visualization (`viz`). Renamed modules and functions to adhere to standard naming conventions for clarity and ease of use.
- Modules for data reading and manipulation, such as `dlkit`, `datakit`, `prepkit`, are now under the `prep` module and renamed to `timeseries`, `read`, `excel`.
- Modules for data visualization, such as `viewkit`, and plot functions from `dlkit`, are now under the `viz` module and renamed to `table` and `graph`.
- Some function names have been changed to be more descriptive, such as `datakit.dict_null_data` to `prep.read.missing_row()`.
- Integrated with Travis CI, Codecov, Codacy.
- Testing using pytest with a target of 90% coverage.
- Released the [hidrokit] and [hidrokit-nb] websites, which include contribution guidelines and general project information.
**Fixed**
- Improved the documentation at [hidrokit.readthedocs.io] by dividing it into three pages: data preparation, data analysis, and data visualization.
**Removed**
- Removed the `bmkgkit` module, which has no replacement yet.
- The following modules have been removed/replaced and will no longer be used:
- `dlkit`, `viewkit`, `bmkgkit`, `prepkit`, `datakit`.
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