Fixed wrong mode of gif image.
In case of L mode and small image.
Pyroma installation is slow on Py3, so just do it for Py2
Added test case for gif image (mode L): optimization turned on, but not needed.
Fixed test_optimize_full_l gif file test case.
Fixed test_optimize_full_l test case for python2.
Fix tga files with image ID field
Merge pull request #843 from uvNikita/gif_mode_fix

Fixed wrong mode of gif image.
J2k DOS fix --  CVE-2014-3598

Found and reported by Andrew Drake of dropbox.com
Bump Version/Changelog
Update CHANGES.rst
Merge pull request #850 from hugovk/pyroma

Pyroma installation is slow on Py3, so just do it for Py2
Use tempfile() instead of /tmp/
Update CHANGES.rst [CI skip]
Need 'temp_' or 'temp.' in filename
flake8 and tests
rename test
Merge pull request #856 from megabuz/tgainfo

Fix TGA files with image ID field
Update CHANGES.rst [CI skip]
Merge pull request #859 from hugovk/test_file_jpeg2k_tempfile

Use tempfile() instead of /tmp/
Update WebP from 0.4.0 to 0.4.1