the low level method htmlelement.classList.add does not accept multiple
classes in one string, which is why, in owl, the expression
`<div t-att-class="{'a b c': value}" />`
did not work as one might expect. It is however very convenient in real
life templates, so this commit improve owl by adding support for this
feature.
closes#813
Owl is meant to stay low level-ish, and making it work magically with
sets/maps/... seems to be a little too much in term of code/magic. Also,
using iterables in t-foreach is actually quite simple, making this
improvement not as important.
closes#720closes#754
including:
- add a link to the tutorial in the main readme page
- remove learning page on 'env', move content on reference page
- add dynamic sub components section in component page
- add reference page on props
- split qweb page into engine/language pages
- move t-key information into qweb language page
Géry Debongnie