Update crate antlr4rust

Author: bors

an/tl/antlr4rust

@@ -1 +1,2 @@
 {"name":"antlr4rust","vers":"0.3.0-beta","deps":[{"name":"better_any","req":"^0.2.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"bit-set","req":"^0.8.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"byteorder","req":"^1","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"lazy_static","req":"^1.4","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"murmur3","req":"=0.4","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"once_cell","req":"^1.2","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"parking_lot","req":"^0.12","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"typed-arena","req":"^2.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"uuid","req":"^1.16.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"c39449ff8155680b7f40b1ee9dd560652bf1c3290c0caabca8a383a3fc5ec9af","features":{},"yanked":false}
+{"name":"antlr4rust","vers":"0.3.0-beta2","deps":[{"name":"better_any","req":"^0.2.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"bit-set","req":"^0.8.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"byteorder","req":"^1","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"lazy_static","req":"^1.4","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"murmur3","req":"=0.4","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"once_cell","req":"^1.2","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"parking_lot","req":"^0.12","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"typed-arena","req":"^2.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"},{"name":"uuid","req":"^1.16.0","features":[],"optional":false,"default_features":true,"target":null,"kind":"normal"}],"cksum":"0578e553c7bdf274e0bc4f4183cf6ec94a6465218cca85275d26efb6613c3f46","features":{},"yanked":false}