Fix eager skipping of newlines

[DavisVaughan]

Closes #125

(Note how many lines in the parser were removed!)

Before:

#define STATE_COUNT 5271
#define LARGE_STATE_COUNT 3028

tree-sitter generate --report-states-for-rule -
binary_operator                         2435
extract_operator                        1823
subset                                  1739
subset2                                 1739
call                                    1739
function_definition_repeat1             842
if_statement                            616
for_statement                           504
unary_operator                          448
while_statement                         392
parameters                              156
function_definition                     140
braced_expression                       112
parenthesized_expression                112
call_arguments                          112
subset_arguments                        112
subset2_arguments                       112
repeat_statement                        112
_single_quoted_string                   112
_double_quoted_string                   112
call_arguments_repeat1                  90
namespace_operator                      84
string                                  84
parenthesized_expression_repeat1        70
braced_expression_repeat1               64
integer                                 56
complex                                 56
_expression                             34
_string_or_identifier                   31
_single_quoted_string_content           30
_double_quoted_string_content           30
parameters_repeat1                      29
float                                   28
na                                      28
_argument_named                         12
_argument_value                         6
argument                                6
_argument                               3
_parameter_with_default                 3
_argument_unnamed                       3
program_repeat1                         3
_parameter_without_default              2
parameter                               2
program                                 1
_hex_literal                            0
_open_bracket                           0
_close_bracket                          0
_open_bracket2                          0
_close_bracket2                         0
_open_brace                             0
_close_brace                            0
_float_literal                          0
_close_parenthesis                      0
_open_parenthesis                       0
_else                                   0

After:

#define STATE_COUNT 2199
#define LARGE_STATE_COUNT 1004

tree-sitter generate --report-states-for-rule -
binary_operator                         1033
extract_operator                        775
call                                    739
subset                                  739
subset2                                 739
function_definition_repeat1             362
if_statement                            264
for_statement                           216
unary_operator                          192
while_statement                         168
function_definition                     60
_double_quoted_string                   48
_single_quoted_string                   48
repeat_statement                        48
braced_expression                       48
parenthesized_expression                48
call_arguments                          48
subset_arguments                        48
subset2_arguments                       48
call_arguments_repeat1                  42
namespace_operator                      36
string                                  36
integer                                 24
complex                                 24
_expression                             18
parenthesized_expression_repeat1        15
braced_expression_repeat1               15
_string_or_identifier                   15
_single_quoted_string_content           14
_double_quoted_string_content           14
na                                      12
float                                   12
_argument_named                         12
argument                                6
parameters                              6
_argument_value                         6
parameters_repeat1                      4
program_repeat1                         3
_parameter_with_default                 3
_argument                               3
_argument_unnamed                       3
_parameter_without_default              2
parameter                               2
program                                 1
_close_brace                            0
_open_bracket                           0
_close_bracket                          0
_open_bracket2                          0
_close_bracket2                         0
_hex_literal                            0
_open_brace                             0
_close_parenthesis                      0
_open_parenthesis                       0
_else                                   0
_float_literal                          0