Yarn 1.0.0 has been released and it doesn't appear to work with the
version of node we current have configured (4.4.7). Bumping to 8.4.0
to get the build green again.

Release 0.26.0

Fix fingerprinting Postgres table with time fields

* show values as % in 100% stacked bar charts

* use formatNumber

* fix flow

* refactor + test

fix #5824

* fix time granularity order

* add comment

Fix Mac App reset password

Add MB_DB_CONNECTION_TIMEOUT_MS env var; fix log colorization on Windows

Fix docstring checker crashes

Chart options buttons back to left

Add new x-rays doc page to TOC

* icon cleanup

* table styling tweaks

* update icons

* directional button hover state

* remove border

* Add :largest-contributors to comparison, bug fixes, refactoring

* Add valid-pairs and field endpoints to comparisons

* Dampen field difference weight in contribution assesment

* fix nice-bins for empty histogram

* fix for nice-bins for histogram with only 1 value

* Change comparison field zoom in. Rename largest-contributor to top-contributor

* fix halfassed rename

* refactor + new components

* use true multiseries

* cleanup

* include constituents in card

* add dataset to card return

* card wip

* growth rate

* check for values

* lint

* cardify all series features. Unpack linear regression

* add linear regression

* use percentages

* flip order

* add growth series description

* add additional info

* fix layout

* layout tweaks

* add action in qb

* show growth series as a %

* xray segment action

* flow

* Support all time breakdowns, fix filtering bug

* make linter happy

* more robust test

* Add conditional descriptions for growth-series. Update tests.

* add periodicity to cards

* Update for updated distance measure

* Removed updates to comparison as they should not be part of PR

* Correct chi^2 distance

* fix headings

* fix flow

* disable flow for action

* use beaker for xray actions

* move specs to proper test directory

* Fix round-to-month when crossing year

* add key

* Add smoke tests for table xray and segment xray pages

* Correctly handle unixtimestamps encoded as bigints

* Add test cases for question xray page and segment xray query builder action

* Test also timeseries question action widget action

* Fix lint errors for xray tests

* Fix Histogram element passing data in invalid format to Visualization

* Fix integration tests for xrays

* Make xrays urls in services.js consistent with other urls

* fix periodicty reweighing

* add sample? predicate

* cleanup

* spacing

* cleanup

* fix failing tests

* fix failing tests

* Update tests

* Refactored periodicity reweighing, more tests

* Support :as in date-time fields, more tests, fix another periodicity bug

* add error handling

* add missing label

* tweak fidelity icon size

* fix histograms

* more specific legend hiding

* hide link for now

* card xray title

* fix field header

* fix stat group padding

* card error handling

* remove duplicated code

Manual FieldValues re-scan for Tables & Fields

Corrections for nested queries instructions

Docs for 0.26 features

Remove the RAW_TABLE FK reference to METABASE_DATABASE

Fixes #5866

Make purple button text white on hover instead of blue

Remove the double encoding of the collection's slug

Add type information to expression columns

Fixes #5108

Expressions aren't columns, but they have an entry in the cols
property which currently doesn't have type info. This adds that which
allows it to be used as the Y-axis in graphs.

Fixes #3952

Fix `yarn run test` and update instructions about using it