### New:
+ add new type: MULTIPLE_LINE_BOSS_BAR
for display multiple boss bars

configuration example:

```yaml
# the multiple line boss bar type example
# Since 1.0.2
multiple_line_boss_bar_example:
delay: 60s
# stay time
# unit: second
# default is 5 sec
stay: 3
type: MULTIPLE_LINE_BOSS_BAR
# Placeholders below are not supported:
# {stay:<double>}
# {delay:<double>}
content:
# Possible bar color:
# PINK, BLUE, RED, GREEN, YELLOW, PURPLE, WHITE
# Possible segment count: 6, 10, 12, 20
- '{#4d6ea5->#a7bce5}this is an boss bar announcement{stay:2}{color:GREEN}{segment:20}'
# requires placeholder expansion: Animations
# command: /papi ecloud download Animations (if you enabled ecloud feature)
- '%animations_<shine start=&9 middle=&4 end=&9 normal=&b size=3>this is an auto-updated boss bar</shine>%{update:0.5}'
- '&6progressing boss bar{progress:true}'
# sets segments to 10
# default delay sets to 5 sec
# default color sets to PURPLE
- '&bthe next boss bar{segment:10}'
```

#### changes:
+ rewrite command '/aa reload'

### Features:
+ add update checker
+ add placeholder '{delay:<double>}' for announce type: BOSS_BAR and ACTION_BAR,
it defines the delay time to next text when the next text be displayed.
```yaml
# example
# ...
# delay to next bar is 2s
# default delay time is sets to 0
- '&6progressing boss bar{progress:true}{delay:2}'
# sets segments to 10
# default delay sets to 5 sec
# default color sets to PURPLE
- '&bthe next boss bar{segment:10}'
# ...
```
+ finally, add some newly unknown bugs (may be, XD)