Feather/linesplit and line continue

[superiums]

• optional choose ; or linebreak to split a statement. linebreak was automaticlly analyzied when a new line start. but except a new lined followed these chars:
  '{' | '(' | '[' | ',' | '>' | '=' | ';' | '\n' | '\\'
• added \ to the end of a line to contiue a line.

tested with following cases:

# 测试1: 纯换行符分割
let a = 1
let b = a + 2
echo b
echo "1 pass"

# 测试2: 分号结尾
let c = 3; let d = c * 4;
echo d
echo "2 pass"

# 测试3: 混合分割
let e = 5;
let f = e + 6  # 无分号
let g = f // 7;
echo g
echo "3 pass"

# 测试4: 控制结构自动终止
if g > 0 {
    echo "Positive"
}

echo "pass 4"

let sum =0
for i in 0 to 10 {
    echo i
    let sum = sum + i
}
echo sum
echo "pass 5"

# 测试5: 多行字符串
let logo = "
    ██╗  ██╗███████╗
    ██║  ██║██╔════╝
    ███████║█████╗  
    ██╔══██║██╔══╝  
    ██║  ██║███████╗
    ╚═╝  ╚═╝╚══════╝
"
echo logo
echo "pass 6"

# 测试6: 续行符连接
let long_expr = 1 + 2 + \
                3 + 4 + \
                5
echo long_expr                

echo "pass all"
# 测试7: 文件末尾装饰换行符

[adam-mcdaniel]

I'll take a look in the morning!! Thank you so much!