use xtend
support options on sublevel(db, opts)
6.3.0
override keyEncoding on bytewise
6.3.1
s/error/err
default encodings correctly inside prehooks
6.3.2
Update README.md
Merge pull request #69 from yorkie/patch-1

fix language syntax
document @calvinmetcalf's migration tool
6.3.3
Merge branch 'master' of github.com:dominictarr/level-sublevel
update to latest levelup
6.3.4
update to latest tape
do not test on .8, just a pain
link to level-write-stream
6.3.5
test coverage for fasley keys, in precodecs that support that (bytewise)