Refs #98
This refactor overhauls the reactive system to move all the reactive
methods to traits. The side effect of this change is that now
DynamicReader's API is the same as Dynamic's API, but because it only
implements Source<T>, DynamicReader does not offer any mutation
functions.
While it's unfortunate to have more traits to include to use Cushy, this
seems like the best option, and it offers a path to try to integrate
this into the tuple ForEach/MapEach traits. Unfortunately, my attempt at
doing those in this set of changes led to issues specifying generic
associated lifetimes for the DynamicGuard. But, I was also in the middle
of this larger refactoring, so it might be that a fresh attempt will
succeed.
While this was a workaround for a docs.rs issue (Px/Lp are not
linked), I decided having the shorter import path would look better in
the examples.
It probably wasn't necessary to update all of the references in the
internal code, but I decided it was worth the consistency.
Font families are now cached. There probably should be a mechanism to
refresh the cache, but we don't currently have a "signal" to notify us
when a font is installed. Presumably, this could be something that
fontdb would eventually add, rather than us building our own.
Closes#48
After trying to run Gooey again on my Mac for the first time in a few
weeks, I found that I ran into the Condvar issue again. Rather than
pasting AssertUnwindSafe in those files, I've both reported the
discrepency in unwind safety (rust-lang/rust#118009) and moved the
workaround into a type that only uses AssertUnwindsafe when compiling
for Apple.
