Lists do not "end" correctly with extra white spaces and <cr>

[Boris Berenberg]

Using this:

### Must haves:
1. Make a plugin based macro to make this easier for end users
1. Use only Free Open Source Software to make it happen
1. Work via API
### Nice to haves:
1. Consistent with Stash and Bitbucket
1. Pretty icons and text in UI
1. Internationalization 
### Finished product:
1. V1 of the plugin is up on the [Atlassian Marketplace](https://marketplace.atlassian.com/plugins/com.atlassian.plugins.confluence.markdown.confluence-markdown-macro)
1. The post you are reading is written entirely in Markdown

The 2nd and 3rd heading get captured within the list

[Boris Berenberg]

Some further digging has shown that this is caused by extra spaces and carriage return characters :(