Basic filters api
Added through for filtering files
Add filters to main function
Update tests for filters
Implement referencedFrom filter with through2
Rename Filters to FilterSettings
Implement filter argument of main compile function
Add filters to readme
Fix off-by-one in compiler error line and column numbers.
Merge pull request #33 from poelstra/errorpos

Fix off-by-one in compiler error line and column numbers.
Make filters an optional argument
Add type to filterObj variable
Merge pull request #29 from ivogabe/filters

Filters support
Don't start compile when input stream is empty.
Merge pull request #34 from poelstra/emptystream

Don't start compile when input stream is empty.
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into patch-1