Update to crystal-db ~> 0.13 (#112)

* Update to crystal-db ~> 0.13
* Update to crystal-db ~> 0.13.1

shard.yml

@@ -4,7 +4,7 @@ version: 0.15.0
 dependencies:
  db:
  github: crystal-lang/crystal-db
- version: ~> 0.12.0
+ version: ~> 0.13.1
 
 authors:
  - Juan Wajnerman <[email protected]>

src/mysql/read_packet.cr

@@ -12,8 +12,8 @@ class MySql::ReadPacket < IO
  io.read_fully(header.to_slice)
  @length = @remaining = header[0].to_i + (header[1].to_i << 8) + (header[2].to_i << 16)
  @seq = header[3]
- rescue IO::EOFError
- raise DB::ConnectionLost.new(@connection)
+ rescue e : IO::EOFError
+ raise DB::ConnectionLost.new(@connection, cause: e)
  end
  end
 
@@ -26,8 +26,8 @@ class MySql::ReadPacket < IO
  read_bytes = @io.read_fully(slice)
  @remaining -= read_bytes
  read_bytes
- rescue IO::EOFError
- raise DB::ConnectionLost.new(@connection)
+ rescue e : IO::EOFError
+ raise DB::ConnectionLost.new(@connection, cause: e)
  end
 
  {% if compare_versions(Crystal::VERSION, "0.35.0") == 0 %}

src/mysql/write_packet.cr

@@ -6,19 +6,11 @@ class MySql::WritePacket < IO
  raise "not implemented"
  end
 
- {% if compare_versions(Crystal::VERSION, "0.35.0") == 0 %}
- def write(slice) : Int64
- @io.write(slice)
- rescue IO::EOFError
- raise DB::ConnectionLost.new(@connection)
- end
- {% else %}
- def write(slice) : Nil
- @io.write(slice)
- rescue IO::EOFError
- raise DB::ConnectionLost.new(@connection)
- end
- {% end %}
+ def write(slice) : Nil
+ @io.write(slice)
+ rescue e : IO::EOFError
+ raise DB::ConnectionLost.new(@connection, cause: e)
+ end
 
  def write_lenenc_string(s : String)
  write_lenenc_int(s.bytesize)
@@ -44,8 +36,8 @@ class MySql::WritePacket < IO
 
  def write_string(s : String)
  @io << s
- rescue IO::EOFError
- raise DB::ConnectionLost.new(@connection)
+ rescue e : IO::EOFError
+ raise DB::ConnectionLost.new(@connection, cause: e)
  end
 
  def write_blob(v : Bytes)