v0.6.0

Announcement:

• php5.4 support to be dropped in the new year

Compat Buster:

• Parser: getLineNo() removed

Compatibility:

• handle escaped quotes inside quoted strings (with or without interpolation present)

Bug fixes:

• undefined sourceParser when re-using a single Compiler instance

Internals:

• replace sourceParsers[] with sourceNames
• replace sourcePosition with sourceLine and sourceColumn