Handle categories / Fix #4

[laedit]

Fix #4: Categories are removed only if they are at the end of the line, and multiple categories for one item are possible:
Input:

- This is a +new list item.
- This is a +Fix list item.
- This is a +Change list item.
- +New features are everyone's favorites.
- This is a list item for a +Developer.
- This is a +super-special custom list item.
- This is my last +DEVELOPER list item. +New

Html processed:

• {New}This is a new list item.
• {Fix}This is a Fix list item.
• {Change}This is a Change list item.
• {New}New features are everyone's favorites.
• {Developer}This is a list item for a Developer.
• {Super Special}This is a super-special custom list item.
• {Developer, New}This is my last DEVELOPER list item.

What do you think?

[avanderhoorn]

Great PR! Do we want to increment the version number of the spec to 0.4-beta?

[laedit]

I wasn't sure about that, since all definition was in the v0.3.0 and only the parser adaptation was missing.

[avanderhoorn]

Great point. But this includes multiple categories and that is an additional feature... hence my thinking there.

[laedit]

Yes, good point, I have bumped the version number to 0.4.

[avanderhoorn]

Huge favour, can you make it 0.4-beta. Just thinking that gives us room to make other changes in this release without having to race through version numbers.

[laedit]

My bad, I haven't see the "-beta" in your previous message.

[avanderhoorn]

So we good to go?

[laedit]

Yes, sorry about the last commits, I haven't see that my modifications had some side effects.