add new functions (Affine and Anti-Aliasing)

Changed the pivot variable from an int type to a float type.

add functions:
createPng
pushImageAffine
pushImageAffineWithAA
pushImageRotateZoom
pushImageRotateZoomWithAA

add functions for sprite:
pushRotatedWithAA
pushRotatedZoomWithAA
pushAffine
pushAffineWithAA

hotfix: pushImage no longer compiles with a transparency color #54

hotfix: pushImage no longer compiles with a transparency color #54
update: Added characters included in the Japanese font.

Add support U8g2 font.

Add support U8g2 font.
Add japanese fonts. ( IPA font converted by @tanakamasayuki
Add readPixelRGB function.
update: Improving the speed of pushImage ( writePixels ).
refactoring: Review of class design.

Bugfix and Add new functions

bugfix: pushImage color bug (SAMD51)
bugfix: pushImageDMA color convert bug.
bugfix: bug with the ESP-IDF that caused DMA to malfunction when sharing SPI with other devices.
bugfix: depending on the include order.

add: textLength function.
add: setBuffer function to LGFX_Sprite.
add: examples/HowToUse/5_images
add: examples/Sprite/FlashMemSprite
add: autodetect flag "LGFX_M5STACKCORE2"

update: autodetecion results are saved in NVS.
update: use of touch interrupt in FT52x6.

Hotfix: M5Stack init command bugfix.

Hotfix: Panel_ILI9342 (M5Stack) init command bugfix.

Add Support M5StackCore2 and Touchscreen

Add Support M5StackCore2 .
Add Support Touchscreen for ESP32 . ( I2C FT5x06 / SPI XPT2046 / SPI STMPE610 )
Add Support backlight control with M5StickC/CPlus .
Add Support Panel ST7796 .
Fix Autodetect crash on ESP-IDF SPI .
Fix Autodetect for LolinD32Pro
Fix Gamma table for M5Stack IPS ILI9342C .
Improved processing speed for SAMD51 .

update LGFX_SPI_ESP32

・bugfix: crash when gpio init.
・update: If the panel.offset_rotation is set to 4 or more, the image will be displayed as a mirror image.
・update: add a board that can be autodetect.
・update: When you specify multiple boards in the define and then include LovyanGFX, they are autodetected at init time.
・update: SPI port setting can be changed by init function. ( init(sclk, miso, mosi, spihost); )

bugfix for ESP-IDF

0.1.18

Merge branch 'master' of https://github.com/lovyan03/LovyanGFX

bugfix: M5StickC/CPlus autodetect.

add: LGFX_AUTODETECT config (M5Stack/M5StickC/M5StickCPlus)
add: ESP32 Parallel LCD support (I2S LCD mode)
add: function writePixels / writeIndexedPixels
update: drawGradientLine support template color

add support M5StickCPlus

add support M5StickCPlus ( autodetect C or CPlus )
add TFT_eSPI compatible functions ( initDMA / waitDMA / dmaBusy )
bugfix: Crash when certain angles were specified for pushRotate and pushRotateZoom.
bugfix: readRect with rgb565_t, rgb888_t
bugfix examples for ILI9488 .
update: jpeg decode speed up.