Added debug flag
respect debug flag in builder
only use RoslynInMemory engine with debug flag
module loader should look into current directory if running in debug mode
Debug flag should have default value
Merge branch 'dev' of https://github.com/scriptcs/scriptcs into friendly-module-loader
fixed breaking tests
automatically set loglevel to debug if -debug flag is found
Merge branch 'dev' of https://github.com/scriptcs/scriptcs into friendly-module-loader

Conflicts:
	test/ScriptCs.Tests/ArgumentParserTests.cs
Merge pull request #537 from filipw/friendly-module-loader

Added debug flag, allow easier module development

Fixes #473
Fixes #503
Update version to v0.9
Update version to v0.10-alpha
changed FileSystem members to be virtual
Merge pull request #574 from filipw/filesystem-virtual

Changed FileSystem members to be virtual
Update NuGet.exe to v2.8.0
Remove .nuget directory from the solution
Update project to use NuGet Automatic Restore
Remove obsolete CombinePackageConfigs task
Merge pull request #576 from jrusbatch/package-restore

Update solution to use NuGet v2.8's Automatic Restore
parser should print an error message correctly
if parser fails, handler should look up scriptcs.opts
if that is not present just use default args since we failed anyway
added tests, removed an obsolete test