Hexo 5.0.0 release note

```md
## Breaking Change

refactor(box): remove Bluebird.asCallback @SukkaW [#4379]
feat: bring up config.updated_option @SukkaW [#4278]
feat(open_graph): drop 'keywords' option from front-matter @curbengh [#4174]
fix(#3464): override permalink use the front-matter @SukkaW [#4359]
refactor: remove lodash from global variable @SukkaW [#4266]
chore/ci: drop Node.js 8 and add Node.js 14 @SukkaW [#4255]
refactor: remove site config from theme config @SukkaW [#4145]

## New feature

skip assets of unpublished posts and delete them if exist @DaemondShu [#3489]
feat(extend/injector): bring up new extend Injector @SukkaW [#4049]
feat: add prism highlight support @SukkaW [#4119]
feat(tagcloud): new option class & level @stevenjoezhang [#4370]
feat(config): validate config after load_config @SukkaW [#4381]
feat(post_ermalink): add `:second` attr option for post permalink @kkocdko [#4185]
feat(youtube_tag): add cookie option @curbengh [#4155]
feat(load_theme_config): support alternate theme config @SukkaW [#4120]
feat(youtube_tag): support playlist @SukkaW [#4139]
feat(feed_tag): support parsing config.feed @curbengh [#4029]
feat(tag): add unregister() method @SukkaW [#4046]
feat(filter): add `_after_html_render` filter @jiangtj [#4051]
feat(load_config): support theme_dir in node_modules @SukkaW [#4112]

## Performance

perf(filter): shorthand syntax @SukkaW [#4377]
perf(filter): set after_render:html as alias of _after_html_render @curbengh [#4073]
perf(backtick_code): shorthand @SukkaW [#4369]
perf: avoid running irrelevant plugins in 'clean' command @curbengh [#4386]
perf(titlecase): lazy require @SukkaW [#4417]
perf(tag/code): performance improvements @SukkaW [#4416]
perf(post): simplify codeblock escape @SukkaW [#4254]
perf(meta_generator): avoid unnecessary check @SukkaW [#4208]
perf(external_link): cache config @SukkaW [#4134]
perf(open_graph): avoid using htmlTag() and enhance cache @SukkaW [#4125]
refactor(list_archives): reduce calls to date.format() @dailyrandomphoto [#4011]
fix(moment.locale): avoid lookup repeatedly with the wrong names @dailyrandomphoto [#4007]
refactor(external_link): optimize @SukkaW [#4008]

## Fix

fix(box): ignore correct .git and node modules in the theme folder @jiangtj [#4306]
fix: posts without title should be accessible @stevenjoezhang [#4344]
fix(#4236): don't create "/index" directories when post_asset_folder is true @jiangtj [#4258]
fix(#4317): non-greedy regexp for tag escape @SukkaW [#4358]
fix(post): swig tag inside post @SukkaW [#4352]
fix(logging): log database only in relevant commands @curbengh [#4387]
fix(server-cache): must match exact alias @curbengh [#4388]
fix(tag-code): parse 'wrap' option @curbengh [#4391]
fix: remove unused type check @Himself65 [#4398]
fix: access error code from error object directly @SukkaW [#4280]
fix(#4251): load_plugin with extra line EOF @SukkaW [#4256]
fix: parsing code error in backticks @seaoak [#4229]
fix(post): use non-greedy regular expressions @stevenjoezhang [#4161]
fix(console_generate): remove useless boolean-to-object conversion @curbengh [#4152]
fix(toc_helper): escape class name and handle null id @curbengh [#4009]
fix(meta_generator): avoid an edge case @SukkaW [#4017]
fix(list_tags): custom class for each element @noraj [#4059]

## Refactor

Reduce array#reduce @segayuu [#4299]
Correct using createSha1Hash() with pipe() @seaoak [#4323]
refactor(post): reduce promise @SukkaW [#4337]
refactor: simplify code @2997ms [#4408]
refactor(external_link): filter regexp @segayuu [#4412]
refactor(hexo): merge theme_config before generation @SukkaW [#4360]
refactor(nunjucks): dedicated nunjucks renderer @SukkaW [#4356]
refactor: drop hexo-util#HashStream @SukkaW [#4279]
refactor(toc): avoid using htmlTag @SukkaW [#4183]
refactor(hexo_index): remove unused parameter @curbengh [#4153]
Refactor(class): Replace prototype to class syntax @segayuu [#4151]
refactor: copy object with spread operator @SukkaW [#4140]
refactor: simplify code @Himself65 [#4138]
refactor: utilize Object.entries @SukkaW [#4118]
refactor: utilize hexo-util pr-169 @SukkaW [#4045]
refactor(hexo/index): use Set @SukkaW [#4013]
refactor: Class syntax @SukkaW [#4100]
refactor(helper): minor changes @SukkaW [#4061]
style: space for asyncArrow @SukkaW [#4102]
Reduce stream @segayuu [#4333]

## Dependencies

chore(deps): bump hexo-log from 1.0.0 to 2.0.0 @dependabot-preview [#4392]
chore(deps-dev): bump hexo-renderer-marked from 2.0.0 to 3.0.0 @dependabot-preview [#4390]
chore(deps-dev): bump mocha from 7.2.0 to 8.0.1 @dependabot-preview [#4354]
Update tester node version @segayuu [#4324]
chore(deps-dev): bump eslint from 6.8.0 to 7.0.0 @dependabot-preview [#4301]
chore(deps): bump warehouse from 3.0.2 to 4.0.0 @SukkaW [#4322]
chore(deps): pin hexo-fs @SukkaW [#4336]
chore(deps-dev): bump eslint from 6.8.0 to 7.0.0 @dependabot-preview [#4301]
chore(deps-dev): bump lint-staged from 9.5.0 to 10.2.0 @dependabot-preview [#4283]
chore(deps): bump hexo-fs from 2.0.0 to 3.0.1 @dependabot-preview [#4277]
chore(deps): bump hexo-util from 1.9.0 to 2.0.0 @dependabot-preview [#4276]
chore(deps-dev): bump sinon from 8.1.1 to 9.0.2 @dependabot-preview [#4232]
chore(deps-dev): bump husky from 3.1.0 to 4.2.5 @dependabot-preview [#4235]
chore(deps): bump chalk from 3.0.0 to 4.0.0 @dependabot-preview [#4215]
chore(deps): bump warehouse from 3.0.1 to 3.0.2 @curbengh [#4077]
chore(deps-dev): bump mocha from 6.2.2 to 7.0.0 @dependabot-preview [#4060]
chore(deps-dev): bump nyc from 14.1.1 to 15.0.0 @dependabot-preview [#4003]
chore(deps-dev): bump sinon from 7.5.0 to 8.0.1 @dependabot-preview [#4005]

## Misc

feat: add benchmark script @Himself65 [#4405
Move coveralls from travis to github actions @segayuu [#4326]
refactor(console/generate): class & destructure assign @SukkaW [#4338]
Fix not to pass callback to hexo-fs @segayuu [#4339]
style: es6 string extensions & destructure @SukkaW [#4357]
docs: deprecate config.external_link (boolean) & config.use_date_for_updated @curbengh [#4371]
style: missing endline in .eslintrc @Himself65 [#4396]
ci(appveyor): drop appveyor @SukkaW [#4402]
chore(release-drafter): wrap PR reference in square bracket @curbengh [#4284]
chore: add release release-drafter (#3858) @YoshinoriN [#4165]
ci: add GitHub Actions to run linter @Himself65 [#4143]
ci(benchmark): generate flamegraph @SukkaW [#4000]
ci(travis): remove Windows @curbengh [#4076]
ci(flamegraph): fix 0x @SukkaW [#4116]
ci(github_actions): Create tester job @segayuu [#4169]
fix: return callback if called @curbengh [#4178]
fix: remove useless conditions @curbengh [#4147]
refactor(benchmark): minor changes @SukkaW [#4411]
github(issue_template): add special notice @SukkaW [#4348]

## Test

refactor(test): async hexo/load_config.js @segayuu [#4340]
test(#4087): add related cases @SukkaW [#4364]
test(post): add test cases for #3543 & #3459 @SukkaW [#4361]
refactor(test-hexo): async/await @curbengh [#4389]
test(generate): add a small delay before clean up @SukkaW [#4393]
test(#4385): no double escape in code block @SukkaW [#4395]
test(generate): add a longer delay after fs#unlink @SukkaW [#4400]
test: coverage improvements @SukkaW [#4270] [#4421] [#4422]
test(box): fix test cases for macOS @stevenjoezhang [#4269]
test(load_plugins): make sure file is created @SukkaW [#4265]
test(post): adding extra test cases @SukkaW [#4238]
test(load_plugins): minor changes @SukkaW [#4212]
test(post): fix cases added in #4161 @SukkaW [#4162]
test(tags-plugins/helper): improve test coverage @SukkaW [#4014]
style(test-helper-is): asyncArrow space @SukkaW [#4015]
test(post_permalink): async/await @curbengh [#4025]
test: improve coverage @SukkaW [#4050]
test(load-database): fix EPERM error in windows @curbengh [#4069]
test: useful sinon.assert @segayuu [#4164]
test: replace from rewire to sinon.stub() @segayuu [#4157]
refactor(test-theme_processors-view): async/await @curbengh [#4043]
refactor(test-theme_processors-source): async/await @curbengh [#4042]
refactor(test-theme_processors-i18n): async/await @curbengh [#4041]
refactor(test-theme_processors-config): async/await @curbengh [#4040]
refactor(test-theme-theme): async/await @curbengh [#4039]
refactor(test-processors-post): async/await @curbengh [#4038]
refactor(test-processors-asset): async/await @curbengh [#4037]
refactor(test-processors-data): async/await @curbengh [#4036]
refactor(test-models-tag): async/await @curbengh [#4035]
refactor(test-models-post_asset): async/await @curbengh [#4034]
refactor(test-models-page): async/await @curbengh [#4033]
refactor(test-models-category): async/await @curbengh [#4032]
refactor(test-models-asset): async/await @curbengh [#4031]
refactor(test-helpers-tagcloud): async/await @curbengh [#4028]
refactor(test-helpers-partial): async/await @curbengh [#4027]
refactor(test-helpers-list): async/await @curbengh [#4026]
refactor(test-generators): async/await @curbengh [#4024]
refactor(test_new_post_path): async/await @curbengh [#4023]
refactor(test-extend-tag_errors): async/await @curbengh [#4022]
refactor(test-extend-tag): async/await @curbengh [#4021]
refactor(test-extend): async/await @curbengh [#4020]
refactor(test-open_graph): async/await @curbengh [#3995]
refactor(test-console-render): async/await @curbengh [#3980]
refactor(test-console-publish): async/await @curbengh [#3979]
refactor(test-console-new): async/await @curbengh [#3978]
refactor(test-list-categories-page-post-tags): async/await @curbengh [#3977]
refactor test @segayuu [#4115]
```