Release 0.6

[ethanfrey]

Closes #32 and #41

Includes cosmwasm 0.6.3

• Build linux support with CentOS7 and recent Debian and Ubuntu
• Build osx support with support for 10.7 and newer
• NO WINDOWS SUPPORT (see Add windows support #28)

[ethanfrey]

I tested this on Ubuntu 18.04.
make test works with these dlls

[clevinson]

Tested on macOS 10.14, go1.13.6

All tests pass, but i'm getting a Rust thread panic error in the middle of one test. Not sure if this is expected behavior.

go-cosmwasm ; make test
RUST_BACKTRACES=1 go test -v ./api ./types
=== RUN   TestInitAndReleaseCache
--- PASS: TestInitAndReleaseCache (0.00s)
=== RUN   TestCreateAndGet
--- PASS: TestCreateAndGet (0.04s)
=== RUN   TestCreateFailsWithBadData
thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: InvalidMagic', /usr/local/cargo/registry/src/github.com-1ecc6299db9ec823/cosmwasm-vm-0.6.3/src/compatability.rs:39:19
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
--- PASS: TestCreateFailsWithBadData (0.00s)
=== RUN   TestInstantiate
--- PASS: TestInstantiate (0.04s)
=== RUN   TestHandle
Time (87_433 gas): 4.887782ms
Time (130_070 gas): 266.249µs
--- PASS: TestHandle (0.04s)
=== RUN   TestMultipleInstances
--- PASS: TestMultipleInstances (0.04s)
=== RUN   TestQuery
--- PASS: TestQuery (0.04s)
=== RUN   TestMockApi
--- PASS: TestMockApi (0.00s)
PASS
ok  	github.com/confio/go-cosmwasm/api	(cached)
=== RUN   TestCanoncialAddress
--- PASS: TestCanoncialAddress (0.00s)
PASS
ok  	github.com/confio/go-cosmwasm/types	(cached)

Also, RUST_BACKTRACE=1 does not seem to work when running go test. The Makefile currently has a type-o of RUST_BACKTRACES=1 instead of RUST_BACKTRACE=1, but fixing the type-o still does not give me a full backtrace when running make test.

[ethanfrey]

That is a triggered panic to test that dll catches those and doesn't let them hit the ffi layer, which can crash the app.

Good point on BACKTRACES. They never worked inside a dll... but I can always hope