Open-fortran-parser

Changes:

- Incorporated changes from upstream, see here for details: https://github.com/OpenFortranProject/open-fortran-parser/commit/4aed61f708f64a59c2f1a9f71c208dbd58d9a0c4.
- Resolved Travis hiccups.

Backwards compatible functionality changes:

- added (hopefully) informative usage text
- FortranStream class is now more easily extensible

Repository changes:

- using jacoco to check test coverage on Travis, and codecov to see the results [](https://codecov.io/gh/mbdevpl/open-fortran-parser)
- added licence file and copyright notice to the repo

Changes:

* some properties of parser events were not printable using FortranParserActionPrint, which was inconsistent across parser events and limited the printer's ability to build a fully-functional custom printer -- now all properties will be printed when maximum verbosity is enabled

Changes:

* using Bintray to automatically publish each build [](https://bintray.com/mbdevpl/pkgs/open-fortran-parser)

Changes:

* patched FortranParserActionPrint class that could not be properly subclassed due to access levels of its members -- so for example writing my own printer would introduce a lot of code duplication

* resolved an issue when compiling with recent GCC versions

* using Travis CI to automate builds [](https://travis-ci.org/mbdevpl/open-fortran-parser)

ANTLR binary is mirrored from here: http://www.antlr3.org/download/