[REL] v1.0.8

# v1.0.8

- qweb fix: do not override t-att-class with class attribute in some cases
- component fix: refuse to mount a destroyed component
- hooks type improvement: useRef is now generic, and can capture the type of a component
- qweb fix: t-esc inside t-call using outside t-set

[REL] v1.0.7

[REL] v1.0.6

[REL] v1.0.5

[REL] v1.0.4

[REL] v1.0.3

[REL] v1.0.0

Finally!!

[REL] v1.0.0-beta5

[REL] v1.0.0-beta4

[FIX] qweb: add support for spread operator

closes odoo#575