AbiWord v3.0.3 Release notes

AbiWord 3.0.3 address several issues with recent version of Gtk+.

Internationalization

Translation updates and fixes:

Fixes in the core (all platforms)

Various build fixes:

Fix various dependency checks: libical3. (#13881), don't check libecal.
Do not #include evolution-data-server with C linkage. Fixes #2 and https://bugs.gentoo.org/690162
Initialize gtk in the tests to prevent crashing.
Add libasan support at configure time.
Bug 13819 - Remove nullptr as we don't require C++11 - a regression introduced in 3.0.2.

Various crash fixes:

Fix a runtime error (integer overflow).
Fix a bad static_cast.
Fix various memory allocation mismatch: GError but use g_error_free instead> Do not delete[] strings allocated with g_malloc() (Fixes #13834)
Bug 13826 - Various out of bounds reads.
Bug 13827 - Fix overflow read in PNG.

Fixes specific to the Linux or Gtk+ version