update supported browsers and add a few more

[silverwind]

Now includes Firefox ESR, Opera and a few more browser with usages between 0.5% and 1%. defaults resolves to > 0.5%, last 2 versions, Firefox ESR, not dead.

before

and_chr 78
and_uc 12.12
chrome 79
chrome 78
edge 18
firefox 71
firefox 70
ie 11
ios_saf 13.3
ios_saf 13.2
ios_saf 13.0-13.1
ios_saf 12.2-12.4
op_mini all
safari 13
safari 12.1
samsung 10.1

after

and_chr 78
and_ff 68
and_qq 1.2
and_uc 12.12
android 76
baidu 7.12
chrome 79
chrome 78
chrome 77
chrome 49
edge 18
edge 17
firefox 71
firefox 70
firefox 68
ie 11
ie_mob 11
ios_saf 13.3
ios_saf 13.2
ios_saf 13.0-13.1
ios_saf 12.2-12.4
kaios 2.5
op_mini all
op_mob 46
opera 64
opera 63
safari 13
safari 12.1
safari 5.1
samsung 10.1
samsung 9.2

[silverwind]

IE 11 and references to it removed as per discussion. I had to explicitely exclude it because it still came in the defaults.

Also removed Safari 5.1. I think this is the long dead Windows version of Safari from 2011 which I would not expect to work.

[tboerger]

Is this selecting based on any official average statistics? I would prefer some standard statistics before dropping support for browsers in minor version changes.

[sapk]

Maybe just stay to defaults even if it contain IE11 ?

[silverwind]

Browser usage data comes from caniuse data which I think is sourced from statcounter.

[silverwind]

Maybe just stay to defaults even if it contain IE11 ?

I wouldn't. Either we support it or not. It will block certain features like CSS variable so I think it's time we do it.

By the way GitHub dropped IE 11 support in July 2018, I say it's long overdue.

[silverwind]

Decided to give IE11 a try and with #9735 applied, it actually does not look so bad, no JS errors while browsing a few pages.

Based on that, I think defaults is good enough for now, so IE support lives on.

It does not noticeable increase build size (only about 1kB more CSS, JS stays the same).

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@f106b09). Click here to learn what that means.
The diff coverage is 80%.

@@            Coverage Diff            @@
##             master    #9734   +/-   ##
=========================================
  Coverage          ?   42.18%           
=========================================
  Files             ?      603           
  Lines             ?    78837           
  Branches          ?        0           
=========================================
  Hits              ?    33256           
  Misses            ?    41509           
  Partials          ?     4072

Impacted Files	Coverage Δ
routers/repo/setting.go	13.44% <0%> (ø)
routers/routes/routes.go	86.51% <100%> (ø)
modules/sync/unique_queue.go	53.7% <100%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f106b09...7bf1b36. Read the comment docs.