Nelson 0.1.6 build

0.1.6 alpha (2017-06-19)

Features:

• The QML engine enables nelson programs to display and manipulate graphical content using Qt's QML framework.

  qml_demos // for demonstrations
  

• Qt 5.9 used on Windows binaries

• add CONTRIBUTING.md , CODE_OF_CONDUCT.md and ROADMAP.md files

• add 'heldlg', 'msgbox', 'errordlg', 'warndlg' functions based on QML.

• add 'questdlg' function (Creates a question dialog box) based on QML.

• add '==', '~=', 'isequal', 'isequaln' overload for handle and QObject.

• add ishandle, isprop, ismethod, method, properties builtin.

• add set, get, invoke, isvalid builtin used by handle objects.

• extends clear function to call delete if 'TYPEHANDLE_clear' function is defined.

• add handle object type.

• gui module also loaded in advanced cli mode.

• add 'sind', 'cosd', 'tand' functions.

• add more output information in the result file of test_run function.

Bug Fixes:

#47: add isfinite builtin.

#43: rename getContentsAsWideString to getContentAsWideString.

#27: >= operator was not implemented.