0.6 (16-May-2018)
- Add support for ppx_sexp_conv >= v0.11.0

0.5 (04-Aug-2017)
- port to jbuilder

0.3 (21-Aug-2015)
- correct ordering
- add rpc to opam
- add doc gen to _oasis

0.2
- store backtraces as lists of records rather than strings
- change the API for "importing" backtraces from other languages
