Nathanaël

I'm listing here the github issues regarding the behavior of the modifiers. As a lot of information is lost between the call of `xpath/xmap`, the internal call of `:xmerl_xpath.string`, and...

:snail: :snail: :snail:

I think there is a more fundamental improvement that can be done to fix this issue by reviewing how we use `Stream.resource`, but this is the smallest change we can...

Various things

As the title say, plenty of miscellaneous changes