* Change naming

* x to a

Resolve #2069
Resolve #2051
Resolve #2807
Resolve #3647

* Create PULL_REQUEST_TEMPLATE.md

* Update PULL_REQUEST_TEMPLATE.md

* Sample Nginx configuration

* nginxによせる

* 非Debian系ではsites-enabledがない

* Update parser.ts

* Update user.ts

* Update search.ts

* Update parser.ts

* Update parser.ts

* Update parser.ts

* Update parser.ts

* Update parser.ts

* Update parser.ts

* Update mfm.ts

* Update parser.ts

* Merge branch 'develop' into 3440-mk2

* Fix typo

* Update parser.ts

* Update mfm.ts

* Update mfm.ts

* Update core.ts

* Update core.ts

* Create functional-syntax.ts

* Update core.ts

* Update functional-syntax.ts

* Update core.ts

* Delete functional-syntax.ts