v1.12

• Build with jbuilder (#38 by @nojb)
• Fix a possible GC crash (#36 by @madroach)
• Fix build with MSVC toolchain (#37 by @nojb)
• Build C with -fPIC (#25 by @talex5)

v1.11

• Relicense to ISC (#22)
• Fix Windows support and test with appveyor (#28)
• Fix FreeBSD support (#12)

v1.10

• Fix build with OCaml 4.06 (and -safe-string)