Forward port 3.8.0 changes

[TWiStErRob]

There are some changes in 3.8.0 which are not yet available in 4.0.
This ticket is here to remind that 3.8.0 milestone need to revised for commits that should be forward ported into the new version, see also commits: v3.7.0..v3.8.0.

If anyone wants to do it, it's up for grabs!

[TWiStErRob]

Quick check of what needs to be done:

• 1281 Use application Context in GifResourceDecoder
  2cf9d2b forward port into ByteBufferGifDecoder -> Forward port GIF fixes #1323
• 1119 Support contact Uri 394
  4f633ec forward port -> Forward port PR #1119: Support contact Uri #1322
• 1090 Fix thread-unsafe behaviours in GifDecoder
  dbb7be3 forward port into StandardGifDecoder -> Forward port GIF fixes #1323
• 1093 Fill only the area that was modified by the previous GIF frame
  e15172e forward port into StandardGifDecoder -> Forward port GIF fixes #1323
• 1096 .asBitmap().crossFade()
  20b57a2 forward port, and close issue 840 -> Forward port PR #1096: .asBitmap().transition(withCrossFade()) #1324

More details:

Issue ID	Issue Title	Issue labels	v3 commit	v4 commit	action
394	Support contact uri	feature	1119		ok, see PR
637	GIFs drop frames when many of them are displayed	bug duplicate enhancement reproducible	1060		ok, see duplicate
941	OkHttp3 integration lib wrong pom xml	bug no-library	9f53341	v3 only	ok, no port needed
957	Gradle compile failed on okhttp3 integration using dependency	bug duplicate	941		ok, see duplicate
970	Backport GIF overdraw fixes	bug enhancement	1092		ok, see PR
972	Change invalid okhttp3-integration dep	bug	941	v3 only	ok, no port needed
1003	Could not find glide-parent:library:unspecified	bug duplicate	941		ok, see duplicate
1007	Open up animate AP	enhancement	1096		ok, see PR
1027	Catch IllegalStateException in onAttach for v3 fixes 497	enhancement	ac3b33a	deb80c2	ok, symmteric
1057	Catch OutOfMemoryError in decode for v3	enhancement			not merged yet, missing option
1059	The Gif load problem, can't display wel	bug	1093		ok, see PR
1060	GIF - Significant delay before showing the second frame for the very first loop	bug	1091		ok, see PR
1068	black square background appears under the transparent gif.	bug reproducible	1090		ok, see PR
1090	Fix thread-unsafe behaviours in GifDecoder	bug	dbb7be3		forward port into StandardGifDecoder
1091	Get frame delay before advancing to show the current frame for the correct amount of time	bug	1a04714	36993b8	ok, was long fixed in v4
1092	Fixes 970 gif disposal backporting to v3	bug	fd2e9a7	620, 950, 836	ok, already backported
1093	Fill only the area that was modified by the previous GIF frame	bug	e15172e		forward port into StandardGifDecoder
1096	.asBitmap().crossFade()	feature	20b57a2		forward port, and close 840
1119	Support contact Uri 394	feature	4f633ec		forward port
888	Remove leftover lines for 888	commit	ba6d505	724e606	ok, symmteric
888	Remove version codes	commit	ca861e0	54ddf86	ok, symmteric
	Remove --parallel from travis build.	commit	1a10191	a0aada3	ok, symmteric
1277	GifResourceDecoder leaks activity once in memory cache	bug enhancement	1281		ok, see PR
1281	Use application Context in GifResourceDecoder	enhancement	2cf9d2b		forward port into ByteBufferGifDecoder

[TWiStErRob]

All PRs merged.