Merge pull request #18 from mEDI-S/changes

merge WG changes from 0.8.10 to 0.8.11
Updated compiler and xvm version
Updated compiler to build 8.11 builds and updated xvm's config
Added error notifications rather than logging to a file. Closes #19 and closes #20.
Updated code to take crews tank proficiency into account when calculating ranges. Closes #21
Changed some logging messages
merge WG changes from 0.8.11 to 0.9.0