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, 2 insertions, 2 deletions

diff --git a/timetask/time_entry.go b/timetask/time_entry.go
index ff0ad1f..bb7a741 100644
--- a/timetask/time_entry.go
+++ b/timetask/time_entry.go
@@ -10,7 +10,7 @@ type TimeEntry struct {
 	Task        int
 	WorkType    int
 	Date        time.Time
-	Time        int
+	Time        float64
 	Billable    bool
 	Description string
 }
@@ -19,7 +19,7 @@ func NewTimeEntry(
 	profile Profile,
 	project Project,
 	date time.Time,
-	time int,
+	time float64,
 	description string,
 ) TimeEntry {
 	return TimeEntry{