fix some bugs

Fix barcode unable to input "-" character.

Fix the issue of failed printing of multi page PDF files.

Adapt to some printer models.

1.Update Print Template

Fixed communication failure issues with some Bluetooth models.

Fix the issue of misalignment in printing on 300dpi machines

1.Increase the exchange of inch and mm units 2.Add App Display Language Switch 3.Add a video tutorial on using the app

New icon function added on the 'Edit' page

1.Fix the issue of PDF size being too long to print

1.Add Wi-Fi connection recording function.

1.Adapt to new printer models.

1. Fix clipping PDF file size bug.

1.New function of cutting pdf file size.

1. New functions of label printing rotation 0, 90, 180, 270. 2. Import 70x38mm template. 3. Fix some bugs.

1. Optimize the Bluetooth device list. 2. Increase image compression A and image compression B for faster printing and transmission speed.

PDF printing can be rotated 90 degrees

Edit text function add multiple fonts.

Optimize WI-FI connection status

1. Bluetooth keeps connected when entering the APP and entering the background 2. Add circular label paper edit box 3. Fix some known bugs

1. Add a Bluetooth / Wi Fi connection success icon, and each time you open the app, it will automatically reconnect to the last device. 2.Add a print template.

New features: 1. PDF printing, you can select PDF directly from the File app 2. Vertical display, left alignment and right alignment are added for text and time properties. Fix the problem: 1. When the QR code is enlarged on the editing page of large size label, it will be blurred

1. TSC\ZPL command adds 300 DPI printing 2. ZPL command concentration changed from 2 to 8

1. New PDF printing function 2. New Wi-Fi printing function 3. Image screenshot function default 4:6 4. Other page UI adjustment

1. System template language adapted to Chinese