Update VE core submodule to master (ee59e9d33)

Authored by Jdforrester-WMF on Fri, May 19, 3:52 PM.

Description

Update VE core submodule to master (ee59e9d33)

New changes:
d336169fe rebaser: Don't spam the entire document into the log on initialization
1963a9993 ve.dm.SurfaceFragment#delete: Don't pre-build a sequence of transactions
6c915f305 TransactionProcessor: modify DM tree branches instead of rebuilding them
8773258bb ve.dm.ElementLinearData.test: Cover compareElements
7a073c78f RebaseClient: Don't log empty rebases in acceptChange
5adce57ea rebaser: Implement author names
78c7beecb rebaser: Tidy up author list UI
85d26f491 Get minimal diff when word starts/ends the paragraph
ca273a56c rebaser: Move author list to widget
ab693bead rebaser: Show active user count

Bug: T160795
Bug: T162762
Bug: T165772
Change-Id: Ibd21e6a78c3958db1c0ec8f0317c4c07f3fa5735