Promad

After the accompanying [article](https://doi.org/10.1186/s12859-020-3402-4) is now published in BMC Bioinformatics this package is considered stable.

**bug fix**: loading save files without exposure data

Add the ability to modify exposure times.

* export reports in different formats:
* Excel
* JSON
* CSV
* LaTeX

Excel reports overhauled

* add new arrays (ARY007, ART015, ARY028)
* new function to check array alignment
* extend functionality for web frontend