Bug 678479 - Leading spaces in first line of <pre> are ignored
Whitespace cleanup.
NEWS update for 4.5.3 release.
Post-release version bump.
Updated Greek translation
Bug 681087 - Add tooltips for editor toolbar items.
Remove GDK_THREADS_ENTER and GDK_THREADS_LEAVE macros.

The code in gtkhtml.c is single-threaded, these macros are not needed.
Updated Slovenian translation
Coding style and whitespace cleanup.
Bump version to 4.5.5.

Skipped 4.5.4 since there were no changes from 4.5.3.
NEWS update for 4.5.5 release.
Post-release version bump.
Updated Spanish translation
Update git.mk.

Source: https://github.com/behdad/git.mk
Updated Polish translation
Updated Norwegian bokmål translation
Bug #681495 - Cannot insert a link before another one
Bump version number
Updated Lithuanian translation
Updated Galician translations