vendor: update all dependencies

* Update all dependencies
  * Remove all `[[constraint]]` from Gopkg.toml
  * Add in the minimum number of `[[override]]` to build
  * Remove go get of github.com/inconshreveable/mousetrap as it is vendored
  * Update docs with new policy on constraints

vendor/golang.org/x/text/unicode/runenames/runenames.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:generate go run gen.go
+//go:generate go run gen.go gen_bits.go
 
 // Package runenames provides rune names from the Unicode Character Database.
 // For example, the name for '\u0100' is "LATIN CAPITAL LETTER A WITH MACRON".
@@ -16,33 +16,33 @@ import (
 
 // Name returns the name for r.
 func Name(r rune) string {
-	i := sort.Search(len(entries), func(j int) bool {
-		return entries[j].startRune() > r
+	i := sort.Search(len(table0), func(j int) bool {
+		e := table0[j]
+		rOffset := rune(e >> shiftRuneOffset)
+		return r < rOffset
 	})
 	if i == 0 {
 		return ""
 	}
-	e := entries[i-1]
 
-	offset := int(r - e.startRune())
-	if offset >= e.numRunes() {
+	e := table0[i-1]
+	rOffset := rune(e >> shiftRuneOffset)
+	rLength := rune(e>>shiftRuneLength) & maskRuneLength
+	if r >= rOffset+rLength {
 		return ""
 	}
 
-	if e.direct() {
-		o := e.index()
-		n := e.len()
-		return directData[o : o+n]
+	if (e>>shiftDirect)&maskDirect != 0 {
+		o := int(e>>shiftDataOffset) & maskDataOffset
+		n := int(e>>shiftDataLength) & maskDataLength
+		return data[o : o+n]
 	}
 
-	start := int(index[e.index()+offset])
-	end := int(index[e.index()+offset+1])
-	base1 := e.base() << 16
-	base2 := base1
-	if start > end {
-		base2 += 1 << 16
-	}
-	return singleData[start+base1 : end+base2]
+	base := uint32(e>>shiftDataBase) & maskDataBase
+	base <<= dataBaseUnit
+	j := rune(e>>shiftTable1Offset) & maskTable1Offset
+	j += r - rOffset
+	d0 := base + uint32(table1[j-1]) // dataOffset
+	d1 := base + uint32(table1[j-0]) // dataOffset + dataLength
+	return data[d0:d1]
 }
-
-func (e entry) len() int { return e.base() }