339 - use the OTP lexical scanner
scanner: improve token conversion
moved files around
upgrade min erlang version to R15/R16
scanner: fix bugs and tests
wip cache versions
fix builder error report
fix scanning in case of errors
fix completion for quotes
completion: templates match case-sensitively
wip completion quotes
rework completion tests
cleanup
fix builder error report
Merge branch 'new_scanner' into pu
cleanup tasks