build: Update submodules
Add support for tables that are floated.
Address review comments
Add more arguments to mach test commands
Merge pull request #3312 from mbrubeck/test-name

Add more arguments to mach test commands. r=jack
Merge pull request #3305 from glennw/float-table

Add support for tables that are floated.
Merge pull request #3317 from pcwalton/update-submodules

build: Update submodules
Don't fail converting invalid UTF8 when fetching JS source. Fixes #3302.
Fix incorrect path to about:failure source.
Stop messing with the case of the attribute name in AttributeHandlers::get_attribute.

This fixes a bug where GetAttributeNS would incorrectly match lower-case
attributes when called with an upper-case argument.
Merge pull request #3323 from Ms2ger/get_attribute

Stop messing with the case of the attribute name in AttributeHandlers::get_attribute; r=Manishearth
Merge pull request #3325 from jdm/jsdecode

Don't fail converting invalid UTF8 when fetching JS source. Fixes #3302.
Reinstate errors for unused variables and imports.
Remove obsolete FIXME comment.
Call from_base64 on a vector slice rather than a string slice (fixes #2877).
Merge pull request #3329 from Ms2ger/2877-base64

Call from_base64 on a vector slice rather than a string slice (fixes #2877).
Merge pull request #3328 from Ms2ger/fixme-customevent

Remove obsolete FIXME comment.
Merge pull request #3327 from metajack/cargo-profiles

Reinstate errors for unused variables and imports.
Fix broken build after denying unused imports.
Propagate absolute descendants of inline block flows. Fixes #3326.