switch smtp library, add, HELLO hostname option

now using xhit/go-simple-mail, as I wanted to add an option to change
the hostname sent in the HELLO message but this is only possible with
STARTTLS in jordan-wright/email. New option can be seen in Settings >
SMTP with advanced settings turned on.

go.mod

@@ -14,10 +14,9 @@ replace github.com/hrfee/jfa-go/linecache => ./linecache
 
 require (
 	github.com/bwmarrin/discordgo v0.23.2
-	github.com/elazarl/go-bindata-assetfs v1.0.0 // indirect
 	github.com/emersion/go-autostart v0.0.0-20210130080809-00ed301c8e9a
-	github.com/fatih/color v1.12.0
-	github.com/fsnotify/fsnotify v1.4.9
+	github.com/fatih/color v1.13.0
+	github.com/fsnotify/fsnotify v1.5.1
 	github.com/getlantern/golog v0.0.0-20210606115803-bce9f9fe5a5f // indirect
 	github.com/getlantern/hidden v0.0.0-20201229170000-e66e7f878730 // indirect
 	github.com/getlantern/ops v0.0.0-20200403153110-8476b16edcd6 // indirect
@@ -28,47 +27,44 @@ require (
 	github.com/go-openapi/jsonreference v0.19.6 // indirect
 	github.com/go-openapi/swag v0.19.15 // indirect
 	github.com/go-playground/validator/v10 v10.9.0 // indirect
+	github.com/go-stack/stack v1.8.1 // indirect
 	github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible
 	github.com/golang-jwt/jwt v3.2.2+incompatible
 	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/gomarkdown/markdown v0.0.0-20210514010506-3b9f47219fe7
+	github.com/gomarkdown/markdown v0.0.0-20210918233619-6c1113f12c4a
 	github.com/google/uuid v1.3.0 // indirect
-	github.com/hrfee/jfa-go/common v0.0.0-20210816220108-eb3489b34f9e
-	github.com/hrfee/jfa-go/docs v0.0.0-20210816220108-eb3489b34f9e
-	github.com/hrfee/jfa-go/linecache v0.0.0-20210816220108-eb3489b34f9e
-	github.com/hrfee/jfa-go/logger v0.0.0-20210816220108-eb3489b34f9e
-	github.com/hrfee/jfa-go/ombi v0.0.0-20210816220108-eb3489b34f9e
+	github.com/hrfee/jfa-go/common v0.0.0-20211003145958-a220ba8dfb58
+	github.com/hrfee/jfa-go/docs v0.0.0-20211003145958-a220ba8dfb58
+	github.com/hrfee/jfa-go/linecache v0.0.0-20211003145958-a220ba8dfb58
+	github.com/hrfee/jfa-go/logger v0.0.0-20211003145958-a220ba8dfb58
+	github.com/hrfee/jfa-go/ombi v0.0.0-20211003145958-a220ba8dfb58
 	github.com/hrfee/mediabrowser v0.3.5
 	github.com/itchyny/timefmt-go v0.1.3
-	github.com/jordan-wright/email v4.0.1-0.20210109023952-943e75fe5223+incompatible
-	github.com/json-iterator/go v1.1.11 // indirect
-	github.com/lib/pq v1.10.2 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/lib/pq v1.10.3 // indirect
 	github.com/lithammer/shortuuid/v3 v3.0.7
-	github.com/mailgun/mailgun-go/v4 v4.5.2
+	github.com/mailgun/mailgun-go/v4 v4.5.3
 	github.com/mailru/easyjson v0.7.7 // indirect
-	github.com/mattn/go-isatty v0.0.13 // indirect
+	github.com/mattn/go-colorable v0.1.11 // indirect
 	github.com/mattn/go-sqlite3 v1.14.7 // indirect
-	github.com/pkg/browser v0.0.0-20210706143420-7d21f8c997e2
+	github.com/pkg/browser v0.0.0-20210911075715-681adbf594b8
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/skratchdot/open-golang v0.0.0-20200116055534-eef842397966
-	github.com/smartystreets/goconvey v1.6.4 // indirect
 	github.com/swaggo/files v0.0.0-20210815190702-a29dd2bc99b2
-	github.com/swaggo/gin-swagger v1.3.1
-	github.com/swaggo/swag v1.7.1 // indirect
+	github.com/swaggo/gin-swagger v1.3.2
+	github.com/swaggo/swag v1.7.3 // indirect
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
-	github.com/tidwall/gjson v1.8.1 // indirect
-	github.com/tidwall/pretty v1.2.0 // indirect
-	github.com/tidwall/sjson v1.1.7 // indirect
+	github.com/tidwall/sjson v1.2.2 // indirect
 	github.com/ugorji/go v1.2.6 // indirect
 	github.com/writeas/go-strip-markdown v2.0.1+incompatible
-	golang.org/x/crypto v0.0.0-20210813211128-0a44fdfbc16e // indirect
-	golang.org/x/net v0.0.0-20210813160813-60bc85c4be6d // indirect
-	golang.org/x/sys v0.0.0-20210816183151-1e6c022a8912 // indirect
+	github.com/xhit/go-simple-mail/v2 v2.10.0
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
+	golang.org/x/net v0.0.0-20210929193557-e81a3d93ecf6 // indirect
+	golang.org/x/sys v0.0.0-20211003122950-b1ebd4e1001c // indirect
 	golang.org/x/text v0.3.7 // indirect
-	golang.org/x/tools v0.1.5 // indirect
+	golang.org/x/tools v0.1.7 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/go-playground/validator.v9 v9.29.1 // indirect
-	gopkg.in/ini.v1 v1.62.0
-	maunium.net/go/maulogger/v2 v2.3.0 // indirect
-	maunium.net/go/mautrix v0.9.19
+	gopkg.in/ini.v1 v1.63.2
+	maunium.net/go/maulogger/v2 v2.3.1 // indirect
+	maunium.net/go/mautrix v0.9.29
 )