Improve golang log15 library

log15.diff

diff --git a/format.go b/format.go
index bce4914..fb40b9d 100644
--- a/format.go
+++ b/format.go
@@ -12,8 +12,8 @@ import (
 )
 
 const (
-       timeFormat     = "2006-01-02T15:04:05-0700"
-       termTimeFormat = "01-02|15:04:05"
+       timeFormat     = time.StampMilli
+       termTimeFormat = time.StampMilli
        floatFormat    = 'f'
        termMsgJust    = 40
 )
@@ -220,9 +220,9 @@ func formatLogfmtValue(value interface{}) string {
        case bool:
                return strconv.FormatBool(v)
        case float32:
-               return strconv.FormatFloat(float64(v), floatFormat, 3, 64)
+               return strconv.FormatFloat(float64(v), floatFormat, -1, 64)
        case float64:
-               return strconv.FormatFloat(v, floatFormat, 3, 64)
+               return strconv.FormatFloat(v, floatFormat, -1, 64)
        case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
                return fmt.Sprintf("%d", value)
        case string:
diff --git a/logger.go b/logger.go
index 5ec26da..2f3f130 100644
--- a/logger.go
+++ b/logger.go
@@ -108,7 +108,6 @@ func (l *logger) write(msg string, lvl Lvl, ctx []interface{}) {
                Lvl:  lvl,
                Msg:  msg,
                Ctx:  newContext(l.ctx, ctx),
                // the line below degrades performance according to CPU profiler.
-               Call: stack.Caller(2),
                KeyNames: RecordKeyNames{
                        Time: timeKey,
                        Msg:  msgKey,