* Merge in changes for inline widgets
* Make analyzer happy, fix tests
* Fix analyzer
* Add missing doc
* Docs on RichText
* Fix analyzer some more
* Remove whitespace at end of line
* Update goldens
* Text fixes
* Analyzer
* add trailing commas on list/map/parameters
* add trailing commas on Invocation with nb of arg>1
* add commas for widget containing widgets
* add trailing commas if instantiation contains trailing comma
* revert bad change
This is not a grand refactor yet, it's just cleaning up what we have
already, so that people who keep using this API (e.g. dialogs) have
something coherent to deal with.
The major changes are that Navigator and NavigatorState have the same
API now, that most of the examples use `<void>` instead of `<Null>`,
that the navigator observer can see replaces, and that the `settings`
is moved from ModalRoute to Route. I also cleaned up some of the API
documentation.
Various improvements (in particular a new painting fuzzer) to the text manual test.
Some additional documentation.
A fix to Stack to remove an LTR bias: make unpositioned children apply "alignment".
Some more debugging information on RichText and Text.
A fix to the flutter tool to not crash when an RPC call throws an exception.
