client: commands: protection against IRC command injection
client: commands: route commands to Raw and add command injection protection there
Acknowledge contributions from fellow githubbers!
merge #34 changes into #32
Merge pull request #32 from StalkR/injection

Soft protection against IRC command injection
Fix comments and my poor code-reading skills. Damn you StalkR :-)
Further comment tidy and code reorg.
Port sp0rkle's panic recovery back into goirc.
gofmt run.
Hmm, this is failing occasionally now. Maybe I need a faster computer ;-)
Fix up parseLine to use these new-fangled constants; fix Copy doc and test.
Add a version of iopred's Message() and Target() Line methods, and tests.
Returning an error was awkward. Panic when people do things wrong instead.
Add VHost() command, because I wants it.
Split long messages at a configurable length. Fixes #29.
Add another Line method to make life easier.
Don't Error() for EOF, since it's expected.