• Merge changes from upstream

• Migration to null-safety

Changes before this was forked from highlight package

## 0.6.0
# [0.7.0](https://github.com/git-touch/highlight/compare/v0.6.0...v.7.0) (2021-03-07)

### Features

- null safety ([696206a](https://github.com/git-touch/highlight/commit/696206ad53dac56d5653622617ba6fda7c857c1a))

# [0.6.0](https://github.com/git-touch/highlight/compare/v0.5.0...v0.6.0) (2020-02-04)

### Bug Fixes

- pedantic lints ([37b4469](https://github.com/git-touch/highlight/commit/37b4469c90d775ab559b12da20596e2f2d87a6fb))

# [0.5.0](https://github.com/git-touch/highlight/compare/v0.4.1...v0.5.0) (2019-11-14)

### Bug Fixes

- richtext ([036f5a9](https://github.com/git-touch/highlight/commit/036f5a98e395b10a8c3c7cd7821a4044cc96ff6c))

### Features

- add gn and solidity ([196c1c4](https://github.com/git-touch/highlight/commit/196c1c4a11da5619c3c90171cd501043daac30fd))

## [0.4.1](https://github.com/git-touch/highlight/compare/v0.4.0...v0.4.1) (2019-11-12)

### Bug Fixes

- update path ([9cfeb1a](https://github.com/git-touch/highlight/commit/9cfeb1a77c83794e8726b3e03eb3620634f97970))

### Features

- add graphql and vue ([5f558bf](https://github.com/git-touch/highlight/commit/5f558bfd6511a1a84d2b9f0949bb0282a3139e07))
- add highlight core module for more control ([c2bee79](https://github.com/git-touch/highlight/commit/c2bee79b1707c85e7a36f8dbc0dcfa3bdfdfca88))

# [0.4.0](https://github.com/git-touch/highlight/compare/v0.3.0...v0.4.0) (2019-09-20)

### Bug Fixes

- use plaintext mode if no language match ([3c8bb95](https://github.com/git-touch/highlight/commit/3c8bb95f28e8248f2b156b6343ba7f2c4a6c8243))
- **gallery:** correct language ([77855a0](https://github.com/git-touch/highlight/commit/77855a027ca206a615ef09c8314c21bc4163d219))
- drop dart:io dependency for web ([3aa0155](https://github.com/git-touch/highlight/commit/3aa0155d2d04946682a95bd55b421a697171bab1))

### Features

- auto detection param ([de22fa4](https://github.com/git-touch/highlight/commit/de22fa41090283bc4d2ec56ca934cb29bd09f236))

# [0.3.0](https://github.com/git-touch/highlight/compare/v0.2.0...v0.3.0) (2019-09-02)

### Bug Fixes

- background color with image ([0a2d780](https://github.com/git-touch/highlight/commit/0a2d7802a7bd449a853195977e09dbd92143b36a))
- example map gen ([f3f6bdd](https://github.com/git-touch/highlight/commit/f3f6bddb23e3024bf3a6dc6883287e56bba250ac))
- remove deprecated theme ([2e492b6](https://github.com/git-touch/highlight/commit/2e492b6eb18290482c58ce1f5d2ca9068f212e49))

### Features

- **gallery:** add source code link ([3bbc1c1](https://github.com/git-touch/highlight/commit/3bbc1c15d5b1398e05463cc36e6fb7827f514198))

# [0.2.0](https://github.com/git-touch/highlight/compare/v0.1.0...v0.2.0) (2019-08-26)

### Bug Fixes

- drop dart:io dependency at platform web ([05963ef](https://github.com/git-touch/highlight/commit/05963ef3aaf6a6ced1f295765dce207750f0be65))
- rename folder following pub ([510d607](https://github.com/git-touch/highlight/commit/510d6073abdc7cf05e73040ce85eb4dc1124f42c))

### Features

- add padding and textStyle props ([d4ed23d](https://github.com/git-touch/highlight/commit/d4ed23d01248e9e477087c9bc91b2a3ad3ab96c0))

# [0.1.0](https://github.com/git-touch/highlight/compare/2ca2e95262741d908de1b2ae769770de1f80756c...v0.1.0) (2019-08-25)

### Bug Fixes

- alias register ([bfc594e](https://github.com/git-touch/highlight/commit/bfc594ea3dc8a6272fb9ad25f93596975b13e9c6))
- catch int parse error ([41aac3d](https://github.com/git-touch/highlight/commit/41aac3d007d1598456d0becd99743b88da3e1b79))
- className empty ([b16005e](https://github.com/git-touch/highlight/commit/b16005ea72022f929501b8e441e5128151a5df2c))
- dropdown menu style ([9bcd55c](https://github.com/git-touch/highlight/commit/9bcd55ca1e7782e7166b2e90a772a334664baf33))
- find same mode instances for reusing ([a0bffd5](https://github.com/git-touch/highlight/commit/a0bffd5254c793acf3bcd0b170d837c0e2b31cec))
- flutter highlight traverse ([6ae2549](https://github.com/git-touch/highlight/commit/6ae2549a7f1c929069a96208aed74b07d08c17cd))
- join regexp ([28a4e32](https://github.com/git-touch/highlight/commit/28a4e32c004f84e8c60ce2780d032356ac827e38))
- keyword match reference language ([4ec6476](https://github.com/git-touch/highlight/commit/4ec647655f2b4321845c1f51cbcf18e2ed1fea24))
- languages alias ([1a88ff6](https://github.com/git-touch/highlight/commit/1a88ff601c24c824503c4f77b24e159eb534ed89))
- match sub language ([7b0e509](https://github.com/git-touch/highlight/commit/7b0e509046b2f9d6487373de518c0db274bd6307))
- merge styles of same selector ([b678d03](https://github.com/git-touch/highlight/commit/b678d03fffa4666ab37909aaeabc290675777409))
- normalize types ([74cd977](https://github.com/git-touch/highlight/commit/74cd9770c96ccce50d1e7d3082675dfff80a057b))
- regexp with multiline flag ([e9f2a81](https://github.com/git-touch/highlight/commit/e9f2a81f50017b45f9f30e956642a51e3b0fedd4))
- stack overflow, update test cases ([1117023](https://github.com/git-touch/highlight/commit/1117023db772bafd8de084f141b6c1b60a9dd3d9))
- sub language field type ([24c8dc1](https://github.com/git-touch/highlight/commit/24c8dc11d89cc14f1583dbbf9f03f26516804af0))
- terminators filter ([2bdfc37](https://github.com/git-touch/highlight/commit/2bdfc374b7c9bdbf2f41bef5c23e7b2a1c5552f8))
- trim result before comparing ([f7d9680](https://github.com/git-touch/highlight/commit/f7d968010491b07b3297442fd6ae7a1fd9927e3c))
- try to circular object ([9099402](https://github.com/git-touch/highlight/commit/909940208eb1207bb032414f74bcf4c15959fcc8))

### Features

- **gallery:** add ga ([8e5b8c0](https://github.com/git-touch/highlight/commit/8e5b8c0ac0027aa3e1439cacebdf6a3288804efe))
- default style ([2d1e72f](https://github.com/git-touch/highlight/commit/2d1e72f2d4f88c34c4dc56302b4d101e70a6257c))
- use default theme ([505aa11](https://github.com/git-touch/highlight/commit/505aa113051bb674dced4300600e1af5d1f146b1))
- **gallery:** add language select ([acb429c](https://github.com/git-touch/highlight/commit/acb429c31f3c3b751b847e2b2a66541d10d829fa))
- add container background color ([7edd5aa](https://github.com/git-touch/highlight/commit/7edd5aab0bdbebafd2172c8dc234f8feddf37258))
- add generated style files ([4da9ce8](https://github.com/git-touch/highlight/commit/4da9ce867691ac95bc924d08dc09a74b76baec48))
- add highlighter widget ([6f8b529](https://github.com/git-touch/highlight/commit/6f8b5299366015d9a7ae28d00f26342df31584db))
- add refs to fix circular issue ([4470f4a](https://github.com/git-touch/highlight/commit/4470f4a0bf59b46d64b86bc07840b2062a458e0a))
- add tools ([2ca2e95](https://github.com/git-touch/highlight/commit/2ca2e95262741d908de1b2ae769770de1f80756c))
- change exposed api ([11b8c9c](https://github.com/git-touch/highlight/commit/11b8c9cd1e3d9bb1848d6e3fb9d15dc70d945840))
- compile mode ([2811fbb](https://github.com/git-touch/highlight/commit/2811fbb1814995bc15c48710b6ed0bea2b198767))
- copy flutter_highlight to gallery, with flutter_web replacement ([4ea17fc](https://github.com/git-touch/highlight/commit/4ea17fc3683ce7bfcff3f43068e8a4b3b69aa3f0))
- core highlight ([3f8ca78](https://github.com/git-touch/highlight/commit/3f8ca78ea2cf6c58bde4ead2cbfdc9a1485e1bd4))
- json generator ([c5f9e47](https://github.com/git-touch/highlight/commit/c5f9e47ed186cf720e198974d6f40cc9e829b69d))
- output tree node instead of html string ([64376d7](https://github.com/git-touch/highlight/commit/64376d7e6df73b4492318292123efe18ab80cc4b))
- register all languages by default ([33299d3](https://github.com/git-touch/highlight/commit/33299d3cb4d37569e061039a648e2e96eeb1e049))
- select highlight theme at gallery ([063c06c](https://github.com/git-touch/highlight/commit/063c06ce74e7cf142a26cc45df744c9cf0b43938))
- support sub languages ([a4c419b](https://github.com/git-touch/highlight/commit/a4c419b2689e4c0e15e630c6cb8007ee7ac8f35a))
- use es modules ([63778cb](https://github.com/git-touch/highlight/commit/63778cbaa3881b0adbed49d9002193c14b7e30e6))