version bump v0.5.0
changes data tree algorythm
consolodates helper functions to one file
got template locals working for compile step
some code cleanup
fixes server config
adds priority list function
finds first existing file from list
properly setting headers
better calculation of mime type
better calculation of mime type
adds evironment variable
ignore files that start with underscore
resolves ext issue
calculates proper output filename
resolves arbitrary ext on jade files
globals and current now blessed objects
merge globals from config object