commit 24f0b3885aee8f3aaf2b7819bc258446f08b4d8e broke a few non-regression tests related to vec type

[LRGH]

python -m pytest generates three errors in test_cas_exp and two errors in test_cas_mapper.

A short example where the patch broke something is python -c 'from amoco.cas.expressions import *;print(vec([lab("eax",size=32),cst(0x10,32)])+3)' which outputted [(@eax+0x3),0x13]but now outputs T32.

[bdcht]

Fixed by fc91e1d. Would still need to make sure that all tests are independent of a local config now that I've removed travis-ci builds.

[LRGH]

GitHub actions can quite nicely replace travis-ci.