Change `TimeEntry.Time` to a `float64`

I had forgotten that time spent can be a decimal. Make this field a
float and change related code accordingly:

* --time flag
* `NewTimeEntry()` `time` argument
* `buildSubmissionParams()` can't use `strconv.Itoa` as that's an
  integer function. Instead we use `FormatFloat`. Truncate time parsing
  to two decimal places because to me that seems like enough. Who's
  going to say they spent `0.324` hours on something? Also, in order to
  be able to properly submit values to TimeTask (at least on the edition
  I use), the times must be written in European/French format, with
  commas (`,`) as decimal separators. Do a string replace to get this,
  as the float formatter will give us a period (`.`) separator.

1 files changed, 4 insertions, 1 deletions

diff --git a/timetask/http.go b/timetask/http.go
index 6e73276..f236665 100644
--- a/timetask/http.go
+++ b/timetask/http.go
@@ -5,6 +5,7 @@ import (
 	"net/http/cookiejar"
 	"net/url"
 	"strconv"
+	"strings"
 
 	"golang.org/x/net/publicsuffix"
 )
@@ -97,9 +98,11 @@ func buildSubmissionParams(time_entry TimeEntry) url.Values {
 		time_entry.Date.Format("02/01/06"), // day/month/year
 	)
 
+	time_str := strconv.FormatFloat(time_entry.Time, 'f', 2, 64)
+	time_european_format := strings.Replace(time_str, ".", ",", 0)
 	v.Set(
 		"f_time0",
-		strconv.Itoa(time_entry.Time),
+		time_european_format,
 	)
 
 	var billable string