Bump version to 0.3.4

Fix error with temp file read access on Windows

Attempting to access the temp file after creation on Windows will trigger Permission Error.
The fix is to set the the delete flag to False (which is a quick and dirty hack),
which allows Python to 'release' the file handle, resulting in successful subsequent read access under Windows.

Docs reference: https://docs.python.org/3/library/tempfile.html#tempfile.NamedTemporaryFile
`Whether the name can be used to open the file a second time, while the named temporary file is still open,
varies across platforms (it can be so used on Unix; it cannot on Windows NT or later)`

Fixes #255

Bump version to 0.3.2

Fix issue of not cleaning up the temporary files.

Notice in the README for the license change

Bump version to 0.3.0

Reorder TravisCI targets

Italic style instead the note block for notes

Current restructured note styling for the note syntax is broken or
not implemented on most platforms like PyPI/GitHub

Bump version to 0.2.7

Bump version to 0.2.6

Axe the deprecated box option from image_to_string