QASM Decoder cannot accept Some Scientific Notation Parameters

[jkalloor3]

It seems that numbers of the form 1e-5 (an integer followed by an "e" followed by a power) raise a bug in the parser. I think the parser is expecting another integer or a decimal point.

Numbers of the form 1.1e-10 seem to work fine

Minimum Example

from bqskit.ir import Circuit
from bqskit.ir.gates import U3Gate
c = Circuit(1)
c.append_gate(U3Gate(), (0,), [1e-4, 1e-10, 1e-8])
0
c_str = c.to("qasm")
c_str
'OPENQASM 2.0;\ninclude "qelib1.inc";\nqreg q[1];\nu3(0.0001, 1e-10, 1e-08) q[0];\n'
from bqskit.ir.lang.qasm2 import OPENQASM2Language
lang = OPENQASM2Language()
lang.decode(c_str)

Traceback (most recent call last):
File "/global/common/software/m4141/ensemble_env_2/lib/python3.10/site-packages/lark/lexer.py", line 665, in lex
yield lexer.next_token(lexer_state, parser_state)
File "/global/common/software/m4141/ensemble_env_2/lib/python3.10/site-packages/lark/lexer.py", line 598, in next_token
raise UnexpectedCharacters(lex_state.text, line_ctr.char_pos, line_ctr.line, line_ctr.column,
lark.exceptions.UnexpectedCharacters: No terminal matches 'e' in the current parser context, at line 4 col 13

u3(0.0001, 1e-10, 1e-08) q[0];
^