os.read doesn't like being passed None.

Fixing read limit issue. Added tests.

Fixes
```
  Running setup.py install for multitail2
    WARNING: '' not a valid package name; please use only.-separated package names in setup.py
```

Proper packages in setup.py

add support for mutliple glob/file

If a long line is encountered where the trailing newline is not in the buffer
and the buffer is not considered used enough to be cleaned an infinite loop
occurs.

Fix this by ignoring such lines and looping through until the next line is
found.

Fixes infinite loop in TailedFile with long lines.

It seems like we're not correctly handling the situation where files are
deleted, and they're kept open for as long as the process is running.

This is probably because we're relying on an implicit `close()`
happening on the file object when the `TailedFile` object gets garbage
collected, but we don't necessarily have control about this (and it
doesn't seem to happen, hinting at other references pointing to it).

This PR adds and explicit `_close()` method to ensure we no longer need
to rely in this implicit behaviour.

Version bump

Explicitly close deleted files to avoid leaking