Implement 'r'
Tests
Test shim to get command mode input keys working
Don't overrun a line with replace
Merge branch 'master' into implement-r
Test moving to end of last word in file with 'w'
Fix moving to end of last word in file with 'w'
Move the cursor directly
Support the + register as an alias of the * register (system clipboard)
Add % register (current file path)
Implement blackhole register
Map the rest of the lower case registers
Update docs/overview.md to expand on what works with Registers
Adapt code style with suggestion from pull request
Flesh out register specs

Now it covers:
  a
  +
  *
  _

I have a pending spec for %, since I'm not sure how to setup the editor
variable to behave correctly.
make number+gg behave well
add motion E
Group early returns
:lipstick:
Update changelog