Release v0.6.1

# protocolhelper 0.6.1

## Bug fixes
* Overwriting placeholder headers resulted in false alarm from `check_structure`
  (issue #124)
## Enhancements
* Added appendix chapters to `spp` templates (issue #121)

Release v0.6.0

# protocolhelper 0.6.0

## Bug fixes
* Updates were needed to `LaTeX` template to comply with `pandoc`  3.1.8+
  (issue #122)
## Enhancements
* internal reserved codes list has been augmented with codes from genetics lab
* improved error and other messages for `create_protocol()`

Release v0.5.1

# protocolhelper 0.5.1

## Enhancements

* removed html comments from templates beneath part headers, which causes layout
  issues when rendering
* automatically update version numbers in protocol-specific `NEWS.md` files

Release v0.5.0

# protocolhelper 0.5.0

## New features

* new function `add_label` for use with caption argument of `pander` tables

## Enhancements

* better handle pre-existing protocol numbers

Release v0.4.13

# protocolhelper 0.4.13

## Minor changes

* internal function `render_release()` now also writes a `.zenodo.json` file
* protocol authors are now added as contributors instead of creators in 
  `.zenodo.json` file

Release v0.4.12

# protocolhelper 0.4.12

## Minor changes

* switched theme number of air and soil protocols

Release v0.4.11

# protocolhelper 0.4.11

## Minor changes

* removed unneeded docker file
* improved layout of website overview tables

Release v0.4.10

# protocolhelper 0.4.10

## Minor changes

* improved code to generate metadata in templates

Release v0.4.9

# protocolhelper 0.4.9

## Bug fixes

* fixed a bug in protocol code check in `check_frontmatter()`

Release v0.4.8

# protocolhelper 0.4.8

## Minor changes

* various improvements to website homepage, including Dutch and English version

## Bug fixes

* fixed bug in passing metadata to `pandoc`